It looks as if this tool can do just that...

This would take care of that use case as well. It's a webapp that saves only a single file that can only be downloaded once. The idea is that the URL is only known to you. Pretty neat idea for personal file sharing.

It would be cool to have the computer show a series of QR codes with the encoded data, and an app on the phone that decodes them from the video.

Also, there was a 'modem' implementation in a browser posted a few days ago, that could be used to share URLs from phone to PC (if the PC has a mic).

Exfiltrating data can be non-nefarious.

1. Run an ssh server on the phone (may not seem simple to you depending on factors)

2. Bluetooth

SFTP server on your home computer port-forwarded to the net, and an SFTP client on your phone?

I wrote a little tool to do this. It fires up Python's SimpleHTTPServer and presents the URL to the file with a QR code. Works great as long as the phone and laptop are on the same network.

For the other way I use the open source Android app "Share via HTTP" - it does the same thing.

Here's the shitty bash script (I stole the urlencode part from Stackexchange): http://termbin.com/3b04

> my problem is in the reverse - getting things from my computer to the phone.

It also works in this direction with Yopp.

I use the File Commander Android app. It has a great feature where it starts up a web server hosting a file explorer like interface of your phone, where you can download, upload, delete, move and such.

Works surprisingly well.

I have a mac and an Android phone. I use Pushbullet to send links, paste screenshots and it appears you can send files back and forth, too (I've never done it).

If you don't mind using an external service Pushbullet works quite well.