Good day
I would like to ask if it is possible to have an RFID with its card recorded in a database so that when a user taps out, it removes that card from the database and when they tap in, it adds the card back to the database.
Yes it is possible.
Interesting idea. Why can't the card be stored permanently? If your security in that system is good enough, no one will steal it. I've even saved my bank cards on RFID reader.
How can it be done? I have been doing research with no luck
As to track how many people are online (so to speak) or have tapped in and those who tapped out (offline) or have logged out. to determine the correct number of people inside
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What database are you using?
I was thinking of using a MySQL server or excel spreadsheets
How many cards are you expecting at any one time?
The maximum threshold? Since it is a model now, 10 cards
You could just store them in the EEPROM?
True, I can easily do that, I just wanted to learn more about the database method/way using a certain database
OK.. well that really has nothing to do with RFID or your particular question.
Thank you for your input.
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