| 摘要 |
<p>A communication receiver such as a pager (50) includes a SIM card reader for receiving a SIM card (72). The SIM card (72) needs to be installed in pager (50) in order for received messages to be presented to the user. If the SIM card (72) is removed from the pager (50), incoming messages are received and stored, but not allowed to be presented to the user either via the display (68) or in some cases, via the audible alert circuit (58). The use of the SIM card (72) prevents the unauthorized cloning of pagers and also allows for one particular user to own several different types of pagers without the paging service provider having to worry about illegal use of the pagers.</p> |
