Fudan cards, key fobs and stickers are 13.56 MHz MIFARE Classic compatible RFID credentials used for door access, time and attendance, cashless payment and membership systems. Each one carries a chip that talks to a compatible reader when you tap the card or hold it close, so the same tap can open a door, log a shift or pay for lunch.
The difference between a Fudan 1K card and a Fudan 4K card is memory. The 1K card gives you the everyday storage most access control and attendance setups rely on. The 4K card holds four times that memory, which earns its place on sites running several applications on one credential. Both are CR80 cards, the familiar 85.6 x 54mm credit card format that fits ordinary printers, wallets and holders.
There is also a Fudan 1K card with a 2750oe high coercivity magnetic stripe, for sites that still need to work alongside a swipe system. The 27mm stickers add the same 1K chip to a card or surface you already use. The 1K key fobs put it on a keyring for staff who would rather not carry a card. Every option on this page comes in a pack of 100. If you are not sure which chip your readers expect, send us the make and model and the Plastic ID team will confirm compatibility before anything ships.