Read .txt or other file from USB?

Projects General Guidance
1

I am pretty new to Arduino and I am trying to make a timebomb for airsoft.
I would love for it to work with USB keys, which each team has.
They can plug it in the bomb, then the bomb knows which team has control of it.

These would be small USB sticks that hold a small file in them like a .txt or a .ini file which has a token like 'Team Blue' or 'Team Red', or just '1' and '2'.

Can I get my Arduino to read a file like this by attaching a USB to UART 5-Pin serial converter?
Any tutorials, guides or maybe other methods?

2

You would need a USB host adapter or board like Mega ADK.

Cheaper and easier to put on a keypad and give each team an ID number to enter. 1 digit should do since no team will want to enter any number but theirs.

3

Seems to me this is pretty much the same question you are asking here:
https://forum.arduino.cc/index.php?topic=432633.msg2982152#msg2982152
What have you discovered about Arduino & USB Host so far?

Topic locked.

4

(I would merge these if IE11 worked in the forum correctly)