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Introduction: In order for QR code to be used as access credentials, it must be dynamic and secured: Dynamic means the QR Code presented via a smartphone is different every time based on a timestamp. Secured means the QR Code is encrypted and can only be decrypted by the device accepting the credentials. Advantages: Contactless thus no hygiene concern Low cost relative to physical card People are less likely to lose their smartphone Additional layer of security of unlocking smartphone Issuance of access credentials can be done via network means Considerations: Additional IT infrastructure to centrally manage dynamics of QR code generations The risk of credential sharing is increased Addition