EPAPER WRITING PAD WITH E-INK E-Ink display technology makes the ink appear simultaneously while writing on the panel. Just sign on the panel, send the handwritten signature to e-documents on PC, and then complete the signing process efficiently. PenPower ePaper Writing Pad is a great eco-friendly tool for saving paper. It can be written and erased repeatedly at least 50,000 times. Send the original handwritten messages or drawings through the PC versions of Skype, Facebook Messenger, Line, QQ and WeChat. With a big 5-inch panel, users can easily write about 20 Chinese words consecutively on the pad.