The Remember Device developed by Lai Chiu Tang, a student at London's Brunel University, reminds the user when it is time to take her pill with a choice of four alerts - an alarm, a vibrate mode, a light, or a dual alarm vibrate mode, reported online edition of BBC News.
The longer the pill is left untaken, the quicker the light or vibrate mode will pulse and the louder the alarm will sound.
If the pill has not been taken, a series of extra sounds or vibration alerts will start. If these alerts are still ignored, the device, which remembers the exact day in the cycle the last pill was taken, advises users whether to take the missed pill, to skip it and move on to the next one or start a new pill packet at the end of the cycle without a pill-free week.
The pill is more than 99 percent effective against pregnancies. Research suggests 70 percent of women forget to take one a month, and 10 percent forget it at least four times.
The Remember Device carries one pill packet, and indicates the exact pill the user has to take each day. Further, the machine glows red if the user's contraceptive protection level becomes too low, informing her to use an extra contraceptive method.