Smart wake-up alarms that detect when you're entering light sleep in the morning are the only way to be happy. I used to have a Jawbone bracelet that did that

Smart wake-up alarms that detect when you're entering light sleep in the morning are the only way to be happy. I used to have a Jawbone bracelet that did that by slowly increasing vibration. It was even better. But the setup I have today with my phone under the pillow works.