3月18日 的 GrantQR 應用程式分析

Join the network of safe users. With a unique system optimized by dynamic QR codes that change every 30 seconds, they guarantee you completely secure access, so you know that the person is really who they should be. Manage your own security system, for controlled access or attendance list. Enjoy reward miles that can always be authenticated using a secure QR code, without being connected to the Internet.