Kind a hard word to use for an arrest. In many places police can arrest you for some period if they suspect you have committed a crime. This is no different. No need for sensational language.
And “imprison” and “arrest” are pretty darn close. In the US, when you are arrested, you are usually searched, fingerprinted, and a mugshot is taken.
The mugshot can become a public record. There are websites that match mugshots to names, and make money by being paid to take mugshots down.
Nobody wants the google result for their name to be a mugshot.
If US is doing stupid shit then US is doing stupid shit. What else can we expect a third world country to do? In civilized world you are processed yes, but since you are just arrested and not accused you will just be held until the pre-investigation has concluded
> What else can we expect a third world country to do?
We can criticise the largest economy in the world as much as we want inside a browser developed mostly in the US on infrastructure (the internet) whose large parts were developed in the US talking on a website created and owned by a US based company investing capital in one of the largest tech markets in the world (the valley).
That said - the fact they have police/healthcare/tuition problems does not in fact make it a third-world county.
A developing country ("third world") is typically one with low human development index (HDI) (the US is "very high"). Low economic output (the US is the largest economy) etc.
Imprisoning is a much later step after being arrested. When you're arrested you may end up in a holding cell, or you may not.
For a silent/duress alarm it's easy to cross reference the person at the door with a list of personnel authorized to be in the facility. Security in a scenario like that would normally ask for an ID, radio it back to their security office to validate the person is on the access list for that office/building/facility/etc and then do a quick walk-around.