Where to get "flat" / low profile cards

Lounge
1

Is there any place that people can recommend that sells slimline or thin cards?. I bought some from lab401 which are nice and thin but lags a whole for a keyring. Are there any slimline teardrop tags available in the market?, both for 4 and 7 byte UID.

2

Can you be more specific? It sounds like you want the little FOB style. But what transponders?

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3

Do you mean actual protocols or if if i want mifare etc?

4

The specific thing you want. A protocol doesn’t help.

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5

I think @tac0s is asking “what chip do you want in them?”.

T5577

Magic Mifare Gen2

DESFire Ev3 8k

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6

Magic Gen 2 4/7 Byte, or the Ultimate Magic cards :).

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7

if that is all you are really after, just shine a bright torch (flashlight) behind your curen ones, toy should be able to see the antenna and chip so you can nark where to make a hole.

if you specifically want a fob, Try any of the Chinese sures, or maybe eBay /Amazon

to narrow you search, add in your 4 / 7 Byte
THEN
Generally speaking
UID = gen1a CUID = gen2
but not everybody follows this convention accurately.

MTools is a good reliable space outside of the places like Lab401 etc

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