Timer

I really enjoyed the concept of this movie. What better way to prove your love is the real deal then by having a device confirm it for you. To turn something as unpredictable as love, and make it into a timer implanted onto your wrist. This small gadget pretty much determines your love life. Whats the point of going out and meeting new people when you can wait until the clock's number ticks to the due date. It inhibits you from discovering love on your own. But the ending was a bit intriguing, since the two "destined" for one another went to the same running track, so perhaps they were bound to meet one way or another without the aid of the timer.
I also love the little sprinkling on top; that in order for the device to work completely you must "lock eyes" with your soul mate and then the timer will ring. Love at first sight is completely justified with this work of science.