Yes, but they don't make a record of your gait at the DMV and print it on your official ID card, do they?
They might be able to track John/Jane Doe #1 across a plaza, and maybe match that up across multiple cameras, but without a reference database connecting gaits to public identities, there is a possibility that without reasonable suspicion, the data for John/Jane Doe #1 would have to be purged before it could be linked to you.
Of course, a state-level actor that chooses not to obey the law could retain those data indefinitely, and eventually identify you via statistical analyses. If you don't want that to happen, you will need to get politically active and make public oversight of agencies that perform surveillance of the public an issue.
Otherwise, you might have to wear specialized clothing and shoes that change heel height and sole shape as you walk.
They might be able to track John/Jane Doe #1 across a plaza, and maybe match that up across multiple cameras, but without a reference database connecting gaits to public identities, there is a possibility that without reasonable suspicion, the data for John/Jane Doe #1 would have to be purged before it could be linked to you.
Of course, a state-level actor that chooses not to obey the law could retain those data indefinitely, and eventually identify you via statistical analyses. If you don't want that to happen, you will need to get politically active and make public oversight of agencies that perform surveillance of the public an issue.
Otherwise, you might have to wear specialized clothing and shoes that change heel height and sole shape as you walk.