For personalized products the artwork can be uploaded here (login necessary).
It can also be uploaded later, from the order details.
NFC Stickers, equipped with NXP MIFARE Classic® 1k EV1 NFC Chip Integrated Circuit (IC): NXP MIFARE Classic® 1k EV1 4-byte UID Air interface protocol: ISO 14443 A Operation Frequency: 13.56 MHz Operating temperature: from -25°C to 70°C / from -13°F to 158°F Dim