[dylan604]

If you go into a building and change clothes, they will not remember. Of course, we're assuming that the place you went into does not have cameras accessible to the system. At some point, building codes/permits will start requiring cameras specifically to feed into this system.

[cortesoft]

If the system sees someone exit a building and that person does not match someone the system saw enter the building, the person could be flagged and tracked as possibly being someone else who entered the building. Once the system accounts for everyone else who entered the building (by seeing when they exit), the system would be able to correlate that the unknown person who exited is the same as the only unaccounted for person who exited

[dylan604]

If that building in an apartment building? Someone from an apartment building might not enter before leaving on the same day. How far back in the camera's history does the system look for that person entering?

[cortesoft]

This is the point... computers can watch 24/7 and never forget or get distracted. The system could look weeks back, and will never forget a person.

[BobaFloutist]

I know storage is cheap, but I think you run into storage space issues very rapidly if you want high-definition, 24/7 surveillance of every apartment building stretching back weeks.

[mywrathacademia]

Storing video footage from weeks back does not seem feasible. I assume footage would get overwritten after a specific time period.

[cortesoft]

It doesn’t need to store video, just data about where the person is and there various identifying data… the system uses the recordings to generate fingerprints for everyone, then just stores data about where you were/are.

[Symbiote]

Store hashes of the detected faces. Or store low framerate video, just occasional frames where people are detected

[dylan604]

until someone finds that certain cameras are unavailable, or that something has obstructed the view for a significant enough time to cause reasonable doubt

[ndsipa_pomu]

Plastic surgery clinics would likely have an issue

[giantg2]

Changing clothes does nothing against gait recognition.

[dylan604]

Change your shoes with a rock/tack in one of them. Tie your laces together. There's all sorts of ways to change your gait

[cortesoft]

Well, then the system could flag you because it doesn't know who you are. Someone walks out of a building with a gait that doesn't match the gait of anyone known to have entered the building. It would follow the person to the next building and the next, until it figures out who they are via the process of elimination (or if it see you go back to your normal gait). Then, the system would note (and store forever) that you have multiple gaits, and would never fall for the trick again.

[dylan604]

you have way more confidence in AI than I do. "never fall for the trick again" bwahahaha. it can't even tell the same answer twice, or tell you the correct answer the first time for everything.

[cortesoft]

This wouldn't have to be AI. I think you are underestimating how good tracking systems already are, and will continue to improve, and become cheaper and cheaper to deploy.

[dylan604]

I'm sorry, you must be new here. Everything here must be AI

[Larrikin]

All of which give you an abnormal gait that the system should immediately flag for immediate inspection as someone trying to hide their gait.