MetaTag Android Writeable & Programmable Large Capacity NFC Tags Stickers - Pack of 10 (137bits) Suitable for all round NFC use including marketing and task launcher NFC Forum compliant tags, suitable for Android, Windows and BlackBerry Genuine NXP NTAG203 NFC chips (137 bytes of usable memory) Class-leading adhesive back that actually sticks. Gorgeous design with a variety of colors