When Smart Tags and Smart Cards are used as smart labels, they eliminate the use of paper labels. It is an eco-friendly product. The displayed content on Smart Tag and Smart Card can be text, graphics, barcode, or QR code.  Information on the e-paper of Smart Tags ST1020 can be changed or rewritten 10,000 times.  In the case of Smart Card SC1029L and SC1029U, it is more than 1,000,000 times because they require no battery.