Q. Can one leave on recording security cameras on Shabbos for the purpose of kashrus, bosor shenisalem, bishul akum on a house with a caregiver or in an shul where kidush is served and there is no mashgiach temidi?

A. Although, some Poskim are stringent on the use of recording security cameras instead of human supervisors for kashrus (Teshuvos Vehanhogos Y.D. 255) their use today is expanding.
Horav Shlomo Miller’s Shlit’a opinion is that if the screen monitor is off, and only the recording devise is on, it would be permitted to record during Shabbos when the individuals being recorded are Gentiles (see last questions)

Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit”a