Now a new technology has been developed that would allow users to draw letters in the air with their hand to write messages and emails.
Computer scientists at Germany's Karlsruhe Institute of Technology have created an innovative "air-writing" glove system that replace the 'thumb-typing' texts or emails on keyboards or touch screen smartphones.
The glove, created by Christoph Amma and colleagues, is equipped with accelerometers and gyroscopes that detect hand movements, the Discovery News reports.
The system then identifies which letters are being drawn and converts them into digital text, which can then be wirelessly entered into an email, text message or other mobile apps.
The system uses pattern recognition software to interpret gestures and is capable of recognizing approximately 8,000 words, along with complete sentences.
Currently, the model has an error rate of 11 percent, but that drops to three percent once it identifies the user's air-writing style, the report said.