The ABS-CBN Wiki

Kim Chiu's vlog about the lock-in taping.
Translation: Do not go out!

In entertainment industry, a lock-in taping is a special type of taping wherein the show was taped from their respective homes. It was later defined as a taping wherein it is usual, but no one goes out of the house until the taping is finished. The cast and staff must bring beddings, clothes, personal hygiene, and other stuff like a camping/overnight event. The latter setup would compare to the "bubble setup" of sports leagues like NBA and PBA.