Blink is a wireless security camera solution which reminds me a lot of DropCam. Blink records in HD when it sees motion and sends you the clip to your smartphone. Blink also can be viewed remotely through your smartphone.
Blink only streams when you activate the live viewing or when motion is detected. This saves your internets bandwidth. Some ISPs like Comcast limit residential accounts to 250GB per month and DropCam uses about 60GB per month because its constantly uploading HD video to the cloud.
DropCam also has a minimum monthly fee of $7 to store video on the cloud. Blink charges you nothing.
Blink also has a battery life that lasts 1 year.