Scientists from Florida International University and Bloomberg have created a custom two-factor authentication system that relies on users taking a photo of a personal object. When they set up the Pixie 2FA protection, they take an initial photo of the object that will be used for reference. Every time users try to log into their account again, they re-take the same photo and an app compares the two photos. The new system is named Pixie, and researchers argue it is more secure than the aforementioned solutions. All the image recognition operations are handled locally via the Pixie app.
Source: https://www.bleepingcomputer.com/news/security/researchers-devise-2fa-system-that-relies-on-taking-photos-of-ordinary-objects/