Selectively encrypting and displaying machine-readable identifiers in a device lock screen

A computer-implemented method, comprising:

• accessing, by a porable client device comprising at least one hardware processor, input data from a data store of the client device, the input data stored in association with a device profile;
• identifying, by the client device, a first portion of the input data accessible to a first set of users and a second portion of the input data accessible to a second set of users, wherein the second set of users has access to more of the input data than the first set of users;
• encrypting, by the client device, the first portion of the input data using a first cryptographic key;
• encrypting, by the client device, the second portion of the input data using a second cryptographic key;
• controlling, by the client device, a biometric sensor of the client device to obtain the first portion of the input data comprising at least biometric sensor data of an individual corresponding to the device profile;
• generating, by the client device, a machine-readable identifier using the first portion of the input data as encrypted and the second portion of the input data as encrypted;
• and
• causing, by the client device, the machine-readable identifier to be shown in a lock screen of the client device.