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

1. A system, comprising:

a portable client device comprising at least one hardware processor; and

program instructions executable in the client device that, when executed by the at least one hardware processor, cause the client device to:

access input data from a data store of the client device, the input data stored in association with a device profile;

identify 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;

encrypt the first portion of the input data using a first cryptographic key;

encrypt the second portion of the input data using a second cryptographic key;

control 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; generate 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

cause the machine-readable identifier to be shown in a lock screen of the client device.

2. The system of claim 1 , wherein the first cryptographic key is a public cryptographic key.

3. The system of claim 2 , wherein the public cryptographic key is made available to a plurality of reader devices associated with a device profile having a predetermined role.

4. The system of claim 3 , wherein the predetermined role indicates that an operator of a reader device of the plurality of reader devices is an emergency responder or a medical professional.

5. The system of claim 1 , wherein the lock screen of the client device further comprises a lock component that must be manipulated by an operator of the client device to unlock the client device.

6. The system of claim 1 , wherein the first portion of the input data comprises at least one of: a name, emergency contact information, and emergency medical information.

7. The system of claim 1 , wherein the first portion of the input data comprises device location history data collected using a global positioning system (GPS) module of the client device.

8. The system of claim 1 , wherein the machine-readable identifier is a bar code or a quick response (QR) code.

9. The system of claim 1 , wherein the biometric sensor data comprises at least one of: heart monitor data, blood pressure data, step count data, or step velocity data.

10. 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.

11. The computer-implemented method of claim 10 , wherein the first cryptographic key is a public cryptographic key.

12. The computer-implemented method of claim 11 , wherein the public cryptographic key is made available to a plurality of reader devices associated with a device profile having a predetermined role.

13. The computer-implemented method of claim 12 , wherein the predetermined role indicates that an operator of a reader device of the plurality of reader devices is an emergency responder or a medical professional.

14. The computer-implemented method of claim 10 , wherein the lock screen of the client device further comprises a lock component that must be manipulated by an operator of the client device to unlock the client device.

15. The computer-implemented method of claim 10 , wherein the first portion of the input data comprises at least one of: a name, emergency contact information, and emergency medical information.

16. The computer-implemented method of claim 10 , wherein the first portion of the input data comprises device location history data collected using a global positioning system (GPS) module of the client device.

17. The computer-implemented method of claim 10 , wherein a selection of the machine-readable identifier in the lock screen in a display of the client device causes the machine-readable identifier to be enlarged in the display of the client device.

18. The computer-implemented method of claim 10 , wherein the biometric sensor data comprises at least one of: heart monitor data, blood pressure data, step count data, or step velocity data.