Dive into the world of NFC with this handy pack of 40 blank cards! These are NTAG215 chips, which is the specific type you need for a bunch of cool projects. Most famously, they're fully compatible with TagMo for creating your own custom Amiibo figures for the Nintendo Switch. But that's not all – you can use them with any NFC-enabled smartphone for tons of stuff: automating tasks (like turning on lights when you tap your phone), sharing contact info, setting up access control, or even simple mobile payments. Each card is blank, white PVC, and is the standard credit card size (85.5 x 54 mm). They're waterproof and super durable. Each chip has 504 bytes of storage, can be written over 100,000 times, and data lasts for over 10 years. They read/write in just 1-2 milliseconds. Super easy to use – just hover your phone over one and program it with an app. Note: Once you lock an Amiibo file on it, it's permanent. Also, they don't work well on metal surfaces. A fantastic value pack for tinkerers, gamers, and tech enthusiasts!