| 摘要 |
<p>A system for simultaneously supporting short and long distance communication, involves: a mobile terminal (101), a short distance communication POS machine (102) or a long distance communication POS machine (103), a background authorizing server (104), an authorization distributing passage (106) and a radio frequency interface (105), the background authorizing server (104) transmits the key information to the mobile terminal (101) through the authorization distributing passage (106); the background authorizing server (104) transmits the identification code to the short distance communication POS machine (102) or the long distance communication POS machine (103) through the authorization distributing passage (106); the mobile terminal (101) completes exchange of data with the short distance communication POS machine (102) or the long distance communication POS machine (103) through the radio frequency interface (105). The system in the invention simultaneously supports short distance and long distance communications using uniform frequency range, and ensures safety of communication and transaction in the two communication modes.</p> |
