iPhone: Invisible Keybaord.

Kraeutli Florian, a student at the University of London, has developed an innovative keyboard for smartphones which do not need any accessories .The system is that unlike Bluetooth keyboards, works through vibrations made ​​in a surface. For this purpose it uses the  accelerometer included in the telephone, in this case an iPhone 4, to detect the strength and frequency of pulsations . This way, the system compares this data with a reference database, detecting the location of the key being pressed and then use the spelling rules. In  the future of its development, the same Kraeutli explains:

I'm getting signals are very weak. For now it is a concept, but if you can increase the sensitivity of the accelerometer and can easily improve the accuracy.

To demonstrate the capabilities of the system, its developer has uploaded a video where you can see how the keyboard is tested by means of a printed sheet. After this, the system is capable of detecting the pulses with simply do so on a flat surface such as a table.

This project its still on a Beta version, but If this project grows, it is possible to see an application for this in the near future available in the App Store.