My neighbors have been intruding on my property recently and i want to get proof of them in action without them knowing they're being watched. CCTV's won't cut it therefore, and neither would door viewers with door bell and mic functions.
Are there any door viewers that look like any regular door viewer and record either on motion detection mode or perpetually, that can also be viewed in real-time on a smartphone, and hopefully run off li-ion batteries? The last point is not important for now.