Method and system for user authentication using one or more unique ID's associated with one or more electronic devices connected in a communication network, more specifically in short range radio communication network. the method comprising the steps of polling and detection of a short range wireless electronic device within a short range radio communication network, establishing a connection between such short range wireless electronic device with a centralized server, authenticating the short range wireless device ID, requesting further the user to feed a pre-determined authentication code, verifying the fed authentication code with corresponding entries in the database of the central server, establishing an encrypted channel if authentication code found in such database, receiving a user authentication certificate from the wireless electronic device.