How can I use an old Blackberry (OS10) as a security camera?

Is there an app for this purpose?

Yeah, install the app called eBay. Set up an account. Go to the search bar. Type: "security camera". Click the one you like. Order it. Read the manual upon receiving the product. Set it up and you're good to go!

There is an app "CCTV observation Camera" in BlackBerry World which might work for you.

Posted via CB10