|This site contains affiliate links to products and services. We may receive a commission for purchases made through these links.|
Here’s an interesting patent from Canon. This patent covers fingerprint ID on your cameras and lenses that can control custom functions such as IS, AF and likely anything else you can think of. It also offers the ability to customize the camera and/or lens for multiple users as well as offering a complete lockout of the gear.
Below is a flowchart showing how it works.
You can see the patent at the USPTO web site.