Thanks to a patent based on near-field communication (NFC) technology, it will always be possible to have your sensitive documents at hand. The advantage of NFC technology is its ability to include its tags in portable, easily transportable devices, which can contain a link to the holder's sensitive data or an entire data set. All within a secure container, accessible only in the presence of the data owner. It can also be used during customs checks, police checkpoints, and airport gates. NFC technology is supported by a triple security system. The system is based on an open reading section and a protected one, which has three-level authentication (password, user ID, and an encrypted code inside the NFC), for document uploading. Through the use of the app's public front end, the technology can store any ticket for events like concerts and theater occasions, also storing concert ticket codes associated with ID documents and Green Pass. The private front end of the developed app can serve as an access code to transfer data from a memory server to a new device easily, without passing the data through third-party servers.