This APP needs an access code, request it from ARMINET S&W, S.L. if you are a client of Sinlib Libraries Software Consult your Sinlib books, suppliers and clients. Sales and returns for integrated fairs! Book sales, cash control, sending tickets by e-mail, even sell books that are not in your database! It allows to work with external barcode readers (USB-micro adapter and USB OTG support required on the device). Integrated vendor book returns. Work completely offline, and when you have internet, send your data by email, you can directly import it into your Sinlib.