Keyhut POS: Free Point-of-Sale Software for DOS
keyhut.com
keyhut.com
Shameless plug, I recently put up the Leanternet directory of lean internet sites, you might like to see more of these kind of sites and the Leanternet principles at https://www.leanternet.com
EDIT: Fixed.
I think there needs to be a more automated way of finding and sharing these sites, perhaps some browser extension?
In theory a web crawler could check for Javascript inclusion and but crawling might be futile because most of the web is not "spartan".
[0] https://www.sinax.be/blog/general/guidelines-for-spartan-web...
I use HNRSS to subscribe to replies to myself.
Bonus: Stalk other users (subscribe to their submissions). Subscribing to their comments is just creepy.
Now I need to replace my perfectly functional 386DX-40 with one of those fancy 486. Hopefully a Cyrix CX-486DRX2 will do and I can avoid the expense of a new motherboard...
:^)
You can read about the history of winsock here: https://tangentsoft.net/wskfaq/articles/history.html
It brings a smile though that I occasionally have to renew my DHCP lease manually.
It probably relies Windows because it provides a sane abstraction over a large set of network card drivers, and a system-wide TCP/IP stack.
I find it interesting to spot those types of systems in commodity situations.
Most oldschool DOS-y business software is very keyboard driven, so the learning curve is much steeper than that of your average web app. But once you're there, and really it's just a few hours of learning to hit the right keys while your experienced colleague is training you up, then it's super fast.
There's no web page loading times. Click ... Wait .... Click ... Etc ...
Inputs are properly tab indexed, because that's the only way to navigate between them.
Every keyboard hit has instant feedback
No time wasted mousing around.
Look, mouse/touch driven UIs are great for discoverability, and web based UIs are great for deliverability, but neither of those are super important when all users of the software are expected to use it a lot, and use it from a known amount of places (eg branches of a retail chain).
Of course there's nothing preventing web based UIs from supporting the same speed and productivity, but I know of few examples that actually do this.
I love web based software and I make it for a living, but I wish UX designers for line of business applications would take a few more hints from the nineties. If you can assume that a new user gets a few hours of on-the-job training from a colleague, then that wildly changes the assumptions underlying your UX design.
For a while I always said, that I preferred a counter for getting tickets (train or something) as the trained clerk is faster on the keyboard than me on the touchscreen of a ticket machine. Nowadays however clerks on counters have to push the mouse more and more and seemingly have less training.
Can you give a few of those examples? What must be done to accomplish this?
* be 100% keyboard driven (so, indexed inputs for easy TAB navigation)
* really quick and responsive (probably with all the needed code locally available, storing data locally and then sync when no action is going on). It's probably one of the best example where a SPA would be really useful
* be really lightweight so it can run on older hardware (like 10+ years old)
But doing those points "right" with nowadays frontend-mindset I'd say that's pretty difficult.
> (probably with all the needed code locally available, storing data locally and then sync when no action is going on).
I'm not sure this is a requirement. Eg the D forum is extremely snappy yet server side rendered: https://forum.dlang.org/. HN itself is pretty snappy too.
I think "no cruft" is probably the better guideline. And it's a hard guideline to follow in Single-Page Webapp Land :-)
One of the underappreciated things about such productive software which enables it to be used without looking is predictable reaction times. Consider the "amazing data entry" video posted elsewhere in the thread, or good old feature-phones. If you have an action that you perform frequently, the key to learning how to do it without looking is to learn how quickly you can feed the input, where do you have to wait for it to be processed, and how long it takes.
It's one of the things I still miss about my last feature-phone (Sony Ericsson K800i). I could do a lot with it without even taking it out of my pocket, because I committed to muscle memory sequences like "up arrow, up arrow, OK, wait half a second, down arrow x3, OK, OK, exit". There's no way I could do this with an Android phone, because input and processing delays are random. Similarly, on the web, if your action shoots out a network request, it can complete anywhere between half a second and half a minute. You can't do actions like these without looking because there's a non-zero chance a delay will mess it up.
We have pretty much always had iframes and form posts that can be targeted to submit to hidden iframes that JS can read, so XMLHttpRequest is easy to polyfill.
We used to use jQuery and globals or straight DOM manipulation. Or Backbone.js or just straight classes.
It has always been possible to make a SPA. And if you actually are able to download and cache most of the app upfront, it should be pretty quick. The question is, I suppose, how big is the SPA codebase and do newer browsers know how to cache identical codebases into their "entry points"?
The real draw of React and Vue, and more recently, Lit-Element (Google), is that they update the DOM in a smart efficient way, doing updates much more efficiently than you might could do without an intermediate layer.
This is because they are seen among businesses which were early adopters of electronic POS systems (usually linked to electronic ERP) which, back in the day, would have been a huge chunk of cash that they would have needed to spend on something that wasn't a core function of their business. And they're still around today. So that has got to be a successful business by somebody's definition of success.
So, in a sneaky kind of way, you can pretend to be one of them by setting up a vintage- and corporate-looking system like that, even when you are a brand-new and unproven small business.
Back in the day, POS/ERP systems were custom-made. So they are likely to be extremely well-tailored to the way a given corporate actually does business.
Replicating that in a more modern setting nowadays might either involve buying into SAP's racket and still paying huge sums of money for customization to get what you need, or building a new completely custom-made piece of software. -- There is an attitude in business that I find very lamentable but that is nevertheless a reality in that, nowadays, a business would never in a million years choose the latter course of action (i.e. a non-tech business like a chain of furniture stores would, nowadays, be extremely unlikely to pay for developers' time to build an ERP for furniture retail for their exclusive use).
But back then, that was the only thing you could do, and people did do it, because the gains in efficiency that could be reaped were just so big in relative terms (if your old system was pen-and-paper, it's a huge leap forward). Those low-hanging fruit are gone now.
The thing is: Those investments that were made back in the late 80s / early 90s continue to pay dividends to this day in the form of money that you don't have to pay to SAP. And this is a considerable amount of money if it means having to go out and hire consultants with staggering hourly rates each time SAP ceases support for the version of their product you're on, with data having to be migrated, customizations having to be re-invented, etc etc (The consultants, BTW, have to turn around and give a good deal of money back to SAP for certifications etc).
I think it's exactly what I would do if I was CIO in a corporate like that with a custom-made ERP system from the 80s. My most-preferred option would be to pay for some software developers' time to build a new one. But the likely outcome would be that I couldn't get a mandate to do that. So my second choice would be sticking with the system we have, and try to make it last for as long as it can possibly last. Only when that is no longer an option would I ever consider buying a modern ERP off the rack.
I wonder what those companies making those programs are doing nowadays.
Austria is a small country, but quite rich on a per-head GDP basis. With accounting software being so strongly tied to local law, that gives the market a fair amount of protection, in the sense that a Silicon Valley startup won't enter this market as they tend to be interested only in complete and utter world domination, and market-leading accounting system for Austrian small businesses ain't that (but I digress).
So here is the curious history of accounting systems in Austria.
In the IBM host-era the market leader RZL was a company that made a decent product for IBM hosts, mostly the AS/400. Then it became apparent that the future was going to be Windows PCs. So RZL developed another decent product, this time for Windows, with a GUI and everything. BMD saw an opportunity and newly entered the market: They made a programme that ran on Windows but instead of having a modern Windows-like GUI, it tried as much as possible to emulate the UX of an IBM mainframe. -- And they won the market. When people threw out their AS/400s to buy Windows PCs, they switched from RZL to BMD.
BMD became the market leader, and they still are to this day. Now, only just a few years ago, BMD introduced a new version of their product (called NTCS) that had a GUI. This was not to replace the IBM-lookalike product line, but an alternative version fully compatible with the other one that people could opt to get instead. Guess what happened. Their customers went apeshit. They wanted to keep using the IBM-lookalike and were really worried that the arrival of NTCS signalled that they'd eventually drop support for the IBM-lookalike. In order to calm the market they gave out the guarantee that their text user interface would continue to be supported FOR THE NEXT 20 YEARS! Imagine that. BMD will be making UXes that emulate an IBM mainframe in the year 2035 (or whatever it is -- don't know the exact number OTOH). Because their customers WANT THEM TO.
I believe it's marketed also as "anti electromagnetic interference."
It was also used by Wordstar and a few other programs, as it was the only readable background colour that wasn't black. A few people had early "paperwhite" laptop LCDs that preferred black-on-white.
He has a very valid point here!
Or, say I want to boot directly into a video game console emulator with Linux with 0 additional steps. How would I do that?
The cleaner way of doing this is through "inittab". Normally this starts a program called "getty" on the console which provides the login prompt etc. That's what you want to override. It will also restart your program every time it quits.
(Less normal options include "put your program in the initrd", which is viable if it's very small and does all the setup itself, or "write something that runs directly from the UEFI loader")
Instead of trying to detect hardware, network, and all, you could just hardcode everything. If you're working with a standardized set of hardware, that would most likely be simpler than anything else.
Note that pmOS does it to call an actual init system, but it could be done as an init in and of itself.
0: https://gitlab.com/postmarketOS/pmaports/tree/master/main/po...
Also, you can use /etc/passwd to set the shell for every user. If you set this to a non-shell application, you essentially limit this user's session to only ever running that program. So a very lightweight, but networked system could set up sshd in innittab and then create a user with your single-user application set as the shell, and maybe an admin user that actually has access to a proper shell as a back-up.
There actually was a blog post I read not too long ago about a sysadmin who detailed the security challenges of running an open SSH server in which passwd set the shell to a game. There was a little bit more to it to get it completely secure. Unfortunately can't find it right now.
From there, you could wrap it in an Electron window and write some nodejs glue code to let it interface with hardware and the file system.
That would make it possible to rig up some kind of cloud storage for the database files and maybe start to think about getting it running on phones with React Native.
You could sell the iOS app for a small price like $20, or a subscription model with in app purchases. That would help to fund a redesign of the website to a more modern single page app approach.
There are MANY phone POS apps. I do not see why this POS app needs to be re-vectored to also run on phones. I don't want to be ageist about this, but just because something is old, that doesn't mean it's no longer useful.
(at least, I hope they're fully aware!)
He loves Commander Keen. He has dozens of Keen mods installed in DOSBox. He even tries building his own with a level editor (Abiathar)
His shop sold all kind of random things - everything from hamburgers to nuclear weapons...
Some of the screens, e.g. the stock table maintenance, the controls are a bit hairy (e.g. you have to press control-arrow keys to move to another set of fields), he got a bit frustrated at that when I wasn’t there to help him. (I had to go help his little sister.)
> If you have a photo of your son setting up the program that you would like to post on my photo page I am more than willing in this instance suspend the rule of those photos being of actual stores because such a photo would be unbelievably cute and I am a sucker for that. However will understand if you do not wish to post a photo of your son that all the weird-ass folks from Hacker News can see. Also, you can always change columns in the stock table just by pressing [ENTER].
>I am apparently no longer fit to live on this planet.
Over the last month or so I have received some disturbing emails. When summarized they say that they love the POS software. It does everything they want and more, they could not be more pleased with it and if it was not free they would have been more than happy to pay for it. However they are going to have to dump it and go find a different POS program that will probably not be as perfect for them as DHPOS and will have to pay for it to boot.
The problem is that their younger employees hate it. Either they cannot figure out how to use it because it requires input from the keyboard or they are appalled because when they swipe the screen nothing happens.
Cry me a river.
Apparently smartphone use makes one useless for any other function which is yet another reason to avoid them like the plague that they are. I am increasingly distressed that this page has become an endless rant about smartphones but it does seem as though they have become ubiquitous with the only exception to my knowledge being my pants. In the last month my only co-conspiracy relative has gone over to the dark side and I am now alone.
Over the last week I built a cart to hold folding tables (photo below) for the 6 Corners Association that did not in any way require the use of a smartphone, no swiping required, no cat videos attached, and my attention was focused on reality as evidenced by the fact that I still have possession of all of my fingers. Plus I had buckets of fun to boot. I am quite proud of it and since it is real I have no worries of someone accidentally deleting it or of it being hacked and remotely being sent to scoot down Milwaukee Avenue as a hazard to the populace.
I find real life to be endlessly fascinating, plus if I leave my flip phone at home or the battery dies or the phone gets crushed by a plummeting cement block, I’m good, not a problem. I know where I am (since I never left reality) and I can get anywhere I need to go since I pretty much know where everything I might need is. If I need to contact someone I have a printed list of phone numbers in my wallet. However when I am with someone else and their smartphone dies the look of panic on their face is alarming. I try to console them.
So please do not even think of holding a tag-day to purchase a smartphone for me because I am more than fine without one and it would only make me wonder why you hate me.
https://facebook.com/daleharrispos/photos/a.408929929488156/...
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[1] http://www.jaruzel.com/blog/dont-screw-up-a-vaxcluster-tale
I feel for the guy. Sad thing is, the people refusing to use a powerful and efficient piece of software because they can't click or swipe will be suffering and wondering why their job is miserable. And the customers standing in the queue will be suffering too - especially the ones who've seen efficient POS software being used in other shops.
And as an aside the best and fastest POS I ever used was a DOS-based system. I ;earned to key on the number pad because of it (now I need any external keyboard I use to have one). We actually got so good we could key up entire processes, invoices before the screens could update! This was pre-iPhone/touchscreens everywhere and I thought it looked old and outdated when I started. My appreciation grew after working with it, though.
If you find me being less than pleasant on this site, it's usually because I'm talking to someone who is making me feel this way. It's like the modern technology landscape has somehow forgotten the wisdom that was built up over generations. It's infuriating.
> Today was my regular 4 month visit to see Doctor G. Due to unanimous threats of death from all the doctors I see, in the last 4 months I have managed to lose 25 pounds. (I am sure that they are here somewhere but I am not going to try to find them.)
> She was very happy with me and like many other folks asked me what diet plan I was using. I replied that it is one of my own creation that I call the “Move more, eat less” diet. This basically consists of taking a long walk every day, go work in the garage and not sit at the computer all the time, and not putting anything in my mouth that I would actually want to eat, ie, if it tastes really good then I should not be eating it.
Wow, this sounds a lot like paranoid schizophrenia. I hope this guy is alright.
Christ, I'm starting to think this guy and I might be related.
Initial (chaotic, ad hoc, individual heroics) - the starting point for use of a new or undocumented repeat process.
Repeatable - the process is at least documented sufficiently such that repeating the same steps may be attempted.
Defined - the process is defined/confirmed as a standard business process
Capable - the process is quantitatively managed in accordance with agreed-upon metrics.
Efficient - process management includes deliberate process optimization/improvement.
"Amish churches regulate use of technology through a set of oral guidelines known as the Ordnung. ...
In some cases, after careful evaluation, consensus may develop around a particular technology, which may lead to its being adopted by the church district and incorporated into the Ordnung.:
so: takeaway: amish are at highest CMM, and actually very technologically advanced by CMM metric..
Netware server, DOS terminals, DOS drive mappings and networking fun stuff and it was in the days of Windows 2000 so a lot of the MSCE's didn't know anything about DOS drivers etc. Or they, were smart enough to pretend that they didn't so they didn't get stuck with this assignment.
I was team Linux. So team black was they ended up naming it.
> The Cash Register program. has many things that must be hidden like the passwords and PIN numbers. It also has things that users must not be able to change like sales and tax amounts and transaction numbers. These things could easily be changed by anyone who has the source code and anyone with the source code could write a program that would change the hidden things and then release it on the internet making my program useless.
It's all in FAQ. I don't really get the whole thing about the PINs/Passwords, but I'm guessing there's some logic in it.
The funny thing is he explicitly explains to people how to modify the binary with a Hex Editor to change language strings...
I say this with all due respect to the developer, who of course is free to distribute his software however he would like. It's a very cool project, and I often wish we could see a resurgence of such simplicity and distraction-free UX. :)
Yup, this is one of those things where the free software movement managed to be surprisingly influential, even before open source proper was a thing. People who were committed to releasing freeware stuff, with no delusions about ever selling it commercially (even as indie "shareware") started making their source code available and using free software licenses, often "share alike"/"copyleft" ones. Even Linux itself went down that very path, in fact.
26,000 ITEM LIMIT
You may have noticed that it requires almost zero time to find any item in the stock table by the stock number. This is because all of the stock numbers are indexed and held in memory by the program. Unfortunately there is limited memory in DOS software to do this. The theoretical maximum would be 32,000 items but since some memory must also be used for other purposes the program becomes unstable with more than 26,000 items.
The other consideration is that one of the reasons that this program is free is to help the small to medium business compete with the Wal-Marts of this world. With some exceptions once a retail business grows large enough to carry more than 26,000 different items then it is a Wal-Mart type large business and should be able to afford commercially produced POS software.You may have noticed that it requires almost zero time to find any item in the stock table by the stock number. This is because all of the stock numbers are indexed and held in memory by the program. Unfortunately there is limited memory in DOS software to do this. The theoretical maximum would be 32,000 items but since some memory must also be used for other purposes the program becomes unstable with more than 26,000 items.
The other consideration is that one of the reasons that this program is free is to help the small to medium business compete with the Wal-Marts of this world. With some exceptions once a retail business grows large enough to carry more than 26,000 different items then it is a Wal-Mart type large business and should be able to afford commercially produced POS software.
It sounds to me a bit like what the author is saying here is that, if the source code were to get out, then it would become common knowledge how to meddle with the accounting records using a hex editor and that, in turn, would be something that an expert witness in a court of law or a tax auditor would point out to attack the admissibility of the whole system.
But that's kind of bad. If the records can be meddled with in a way that would be known if the source code were to get out, then they can probably also be meddled with without the source code being public knowledge (just harder to figure it out), and that is almost as bad: Security-by-obscurity is probably not a valid defense against that allegation if it were to come up in court.
So, there should really be some crypto there instead.
In some countries it isn't really the POS that does the bookkeeping, but a special device is used that communicates with tax registry (or something, i'm not 100% sure on this). All the POS software does is tell the device what it was sold, the device registers it with the tax registry and gives back some sort of code string to be printed on the receipt. This also allows the receipt to be any type of paper (as opposed to the special triple-layered paper that was often used back in the day) and even if the device itself is tampered with, the information has already been sent to the tax registry.
I think the author of this POS is mostly using this as an excuse to not release the source code, not for any practical reasons.
In addition to this mechanism that allows the fiscal authority to check the transactions on a specific POS for manipulation, fiscal requirements also often mandate much more, such as explicitly registering POS systems with the authority using serial numbers or hardware checksums, mandating the use of specific receipt layouts, or some kind of freeze of viable parts of the POS software which can then not be modified after approved once by the state (you can imagine how much love this kind of regulation gets from developers wanting to work under modern, agile principles...).
However, not all countries mandate such things - many still accept POS systems that basically do nothing to prevent anyone from modifying transactions after the fact (although there is definitely a trend to more strict fiscal requirements globally). These non-fiscalized systems can try to make it hard to modify transactions if they want, and many do, but they cannot make this actually impossible without having some kind of external authority in play, which is why any effort of doing so will amount to some more or less elaborate kind of "security by obscurity".
But surely: Even if a system is not specifically aiming to comply with the requirements of any specific jurisdiction, there are cryptographic things that could be done that don't cost much and are always preferable to pure security-by-obscurity. -- Just, whenever you append to the ledger, take a checksum of the ledger, append the checksum, get the checksum timestamped by a secure timestamping server (like DigiStamp or Germany's D-Trust), append the signed timestamp, and reiterate the next time you append.
That way you can guarantee that you can only ever erase the ledger in its entirety, not tamper with any single records, and even when you do erase an entire ledger, there is a record of it, if the timestamping server does that kind of journalling. -- No need to rely on any security by obscurity there.
That seems way more secure, and costs next to nothing. You don't even need to be online all the time, you can just fetch the signatures when online, and work in offline mode when there is no connection. You can even retrofit that ability when your system works with files, by putting the files under version control, and making the version control system do that. (Personally, I have my version control server rigged to do just that, in case I ever need to prove in a court of law the date when a piece of code was written etc).
That is what I meant with “every implementation that shall not just be an elaborate security-by-obscurity scheme needs an authority”.
Note that no one will ever pay for anything like that if it is not mandated by some government under which you want to operate a significant number of POS installations. It is already crazy expensive to implement all these different and mind-numbingly clusterfucked schemes that all the countries with fiscal requirements want to have implemented. The one thing no one wants to do is coming up with just one more of these schemes that the countries in which no such thing is required will not care about anyway (lawyers will not be impressed at all by technical explanations why your records are super protected against manipulation - they will still call in the armies of accountants to run the numbers up and check your books).
For a while I was in the "lol can't believe this business still uses a DOS program!" camp... but that knee-jerk reaction has faded and I'm completely on the other end now. I'm not anti new technologies, but I am skeptical that they are ultimately always better than what preceded them.
There is so much we have that is "new" that feels far worse than what we had before. Smart TVs, bloated/slow software, etc.
The design side of my brain still feels like even just a few lines of CSS could probably spruce up the site for this software (just in terms of colors/font), but even then, is it really necessary? He likes it the way it is, why not just keep it that way.
... plus it's not making you install a web server and isn't an Electron app. I thought we all collectively hated Electron.
> CORE is primarily a web-based, PHP+MySQL application. There are a few C# pieces most of which are Mono-compatible.
> This is an ElectronJS based app that turns CORE's lane into a desktop app. Apache, MySQL, etc are all still required. This app just takes the place of the web browser. Why?
If one is okay with a web POS, Electron itself seems like a good fit.
The Electron app part is new, I know they were using Firefox with a few XUL extensions in 2015. There probably wasn't much choice beyond Electron once XUL was killed, and their PHP codebase is one of the nicest I have ever worked on.
I love it.
"Sorry, but I do not release the source code for any of my software. This is particularly true for the Cash Register program.
The Cash Register program. has many things that must be hidden like the passwords and PIN numbers. It also has things that users must not be able to change like sales and tax amounts and transaction numbers. These things could easily be changed by anyone who has the source code and anyone with the source code could write a program that would change the hidden things and then release it on the internet making my program useless".