Now,security system that uses your pulse rate as password

Human heartbeats never quite repeat themselves,and each person’s heartbeat is unique.

Chinese researchers have discovered a way to mathematically identify a person’s beat in an instant and use it as a password.

“Because electrocardiogram signals vary from person to person,and can be used as a new tool for biometric recognition,” the Daily Mail quoted researchers at the National Chung Hsing University in Taichung,Taiwan.

Lead researcher Chun-Liang Lin used two ECG readings from people’s palms to determine the distinctive mathematical properties of their heartbeat.

They found that the number could be used as a password and that the system is extremely secure.

Previous ‘biometric’ security systems using fingerprints can occasionally be tricked using photographs.

Lin’s system currently takes the user’s ECG reading from each palm once,and a key based on that reading is stored and used for all later decryptions.

Lin insisted that the goal is to build the system into external hard drives and other devices that can be decrypted and encrypted simply by touching them,New Scientist reported.