Decryption of quick response or other code to present content on display

A method, comprising:

• identifying, using a first device, a decryption key;
• receiving input from a camera on the first device;
• identifying a code based on the input from the camera;
• using the decryption key to decrypt a first part the code but not all of the code;
• based on the decryption of the first part of the code but not all of the code, identifying first content indicated via at least the first part of the code;
• and
• presenting the first content on an electronic display of the first device but not presenting second content on the electronic display related to one or more parts of the code other than the first part.

At least one computer readable storage medium (CRSM) that is not a transitory signal, the computer readable storage medium comprising instructions executable by at least one processor to:

• configure, at a first device, a first part of a code to be decrypted with a first key;
• configure, at the first device, a second part of the code to be decrypted with a second key, the second part being different from the first part;
• make the first key available to a second device and make the second key available to a third device, the first, second, and third devices being different from each other;
• and
• one or more of:
• control an electronic display to present the code, and/or transmit the code to a fourth device different from the first, second, and third devices.