Meet the Ding Dong Doorbell: a WiFi peephole with infrared night vision, two-way communication system, and remote mobile monitoring to help you keep an eye on your property. It works as a peephole, doorbell, and a day/night surveillance camera. It can automatically capture photos of intruders. You can also use it to monitor things from your smartphone.
The device has anti-tampering design and a wide angle view to capture everything. You can answer your door from your smartphone. The 8000 mA battery should last you a month when fully charged. The Ding Dong doorbell is compatible with iOS and Android devices. You can get it on Kickstarter.