Cheap way to identify ID-Cards

2 posts
by schause » Sat Jun 17, 2017 3:03 pm

I am looking for a way to digitally identify playingcard-sized cards.
The only requirements are:
    ID-cards have to be as small as a regular playing card
    Some stuff has to be printed on those cards so humans can read it
    Cards can be put into a slot --> information is read from the card by the raspberry
    Data read from the cards (by the hardware module) can be very small, like just a number
    Has to be cheap!
    It doesnt matter if the data is read optically or by some other technique

Can anyone recommend me something to fit those needs? It actually doesnt matter if its a barcode scanner, rfid, or something else. But it is important to keep it low cost, so i can install multiple instances without having to sell my house or something.

Posts: 1
Joined: Sat Jun 17, 2017 2:46 pm
by aperturescience13 » Sat Jun 24, 2017 2:07 pm
Try using a credit card reader/writer. (You can use regular magnetic key cards instead of credit cards). Then you can give cards unique IDs and read those IDs on the same device. Plus it's cheap.
And as for the rest of your requirements, just print something on the front of the keycards. Laminate them if you want. Go crazy!

I hope this solution works out for ya. It's cheaper than buying a reader/writer for something like RFID.

Here's a random seller of a reader/writer that popped up after a quick search: ... SwWxNY0em5

Good luck.
Posts: 1
Joined: Sat Jun 24, 2017 2:00 pm