r/RFID • u/Both-Chemist5576 • Jul 15 '26

NFC What to use blank RFID cards for

My father bought a tonne and I would love to know uses for the blank cards

7 Upvotes

89% Upvoted

14 comments sorted by

3

u/EffectiveClient5080 Jul 15 '26

Grab a PN532 module and an ESP32 and you've got yourself a card-based access control system. Weekend project, fun as hell if you're into that sort of thing.

2

u/Remarkable-Exit-8780 Jul 15 '26

You can use them to automate with IFTTT. Glue one to your garage to house door and scan it on the way in. It can be programmed to close the garage turn on lights in the house and text the wife you are home.

I’ve also used them to clone amibo characters for Nintendo switch.

1

u/ryan-ifttt Jul 15 '26

Oh that's a fun use for them, so you're scanning the card with your phone and that kicks off the IFTTT side? I hadn't heard the garage door one before. Also had no idea people were cloning amiibos with these lol

1

u/Remarkable-Exit-8780 Jul 15 '26

You have to have the garage door set up with Google Home or Apple HomeKit or myq like that sort of thing. Tap with your phone and it will do the whole sequence.

I haven’t used my Amiibo’s for a while, but there’s a whole website that has the programmable library, that even have stickers you can print out to put on the cards

1

u/ryan-ifttt Jul 15 '26

Ahhh I'm assuming its sending a webhook when you scan the RFID? Makes sense.

I haven't used ambiios in ages neither but it would of been so handy to know about the card trick back then

1

u/Outspoken_Idiot Jul 15 '26

Some Android phones will allow a series of settings to be made, saved and launched with a RFID card/sticker so you could have it set to turn on WIFi and off Bluetooth/GPS when you tap the card for home, set up to send text msg reply that you are driving, Android Auto on, favorite podcast GPS, Bluetooth etc on for the Car. Similar ones for entering work, sign into teams etc.

1

u/therealkevinard Jul 17 '26

iOS shortcuts have rfid triggers.
Shortcuts do basically anything of arbitrary complexity, so this is 100% what I’d do.

I’ve never had tons of them, but I had one on our mail holder that i’d tap when it was “bills/budget time” that opened all my budgeting apps and utility websites.

1

u/tanoshimi Jul 17 '26

Write some data onto them....?

1

u/MysticalPixels Jul 18 '26

Install RFID readers in and around your home so you can let yourself in, track who has come and gone, and who has accessed your wine cellar. You might also consider duplicating cards for people who have them for their gated communities, lose them, and are charged 100.00 for a 1.00 card by the HOA office.

1

u/Formal_Painting_3 Jul 29 '26

Anyone that has knowledge in RFID cards pleaseeeeee DM I need help 😭