For an exhibition I want to create the following setup.
On a table is a box with ~70 index cards. Each index card has a NFC sticker on the back. Under the table is a computer and speakers. I want the computer to play a specific sound for each index card when the card is removed from the box (preferred solution) or placed on the table.
Can you tell me whether NFC is capable of doing it?
Will a NFC reader inside the index card box notice when 1 in 70 cards is missing? (I.e. is the reader range big enough and can the reader react to this many stickers at a time?
Alternatively, the NFC reader is placed under (or inside) the wooden table. How far does NFC approximately reach through wood?
Do you have any specific NFC boards in mind for Arduino that fit the purpose? Ideally it would be affordable.
If NFC is not the right technology for my ideas, what are the alternatives?
Will a NFC reader inside the index card box notice when 1 in 70 cards is missing? (I.e. is the reader range big enough and can the reader react to this many stickers at a time?
No.
Alternatively, the NFC reader is placed under (or inside) the wooden table. How far does NFC approximately reach through wood?
I appreciate you precise answer. However I am wondering which technical limitation exactly causes the idea to fail. Not because I doubt you answer but because it helps me to come up with a good alternative.
Is it that a NFC reader can only read one sticker at a time?
If it makes it any easier, I am happy to read up on the specifications if you can link to a document.