@anyayu: udah ada kali retina recogniton system. Makanya, banyak2 baca ya: http://www.biometrics-system.com/retina-scan.htm
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
@anyayu: udah ada kali retina recogniton system. Makanya, banyak2 baca ya: http://www.biometrics-system.com/retina-scan.htm