Already in use at major Chinese airports/ports of entry.
In my district at least, an IR scan is also required to enter shopping malls, and at least some apartment complexes (including mine).
This morning the nearest Starbucks started requiring IR scan.
I remember reading in the local paper that you have to register with the pharmacy in order to buy fever medicine but I can't find an online source now and I haven't been into a pharmacy to observe it myself.
[1]: https://www.businessinsider.com/wuhan-coronavirus-woman-avoi...