The wise man uses the possibility that he is being monitored to his advantage.
Always act as though you are being watched, this allows you to feed your observer anything you want to.
I have several tiny 720p cameras that are amazing. They cost just 30.00 and record HD content for an hour. I modify them to record for far longer. All that takes is a larger lipo battery and a 32GB SD card. I can get 24 hrs+ from them in 480p resolution. They are easily concealed within common objects and modding with a micro-controller and a cheap 2.4GHz Wireless Transceiver Module (3 dollars) lets you get data from the SD and control the camera from a distance. This ability along with several batteries lets you place a camera somewhere and record 24/7 for many days while you remotely download the video and then delete and wipe the data from the SD card.
It’s amazing what can be done these days even on a modest budget.
bttt
Would you have a link to that particular camera?
I've been experimenting with inexpensive "keychain remote" cameras, but am looking for other types.