The MT-02 tracker provides a comprehensive location and emergency communication solution. When a little extra care is needed to aid people live a more independent lifestyle, the MT-02 is a perfect solution.The MT-02 is a rechargeable tracker that uses SAT NAV and mobile telephone technology to provide, on request, location details of the tracker. The MT-02 operates like a mobile phone where a mobile network SIM card is inserted into the tracker. The phone number of the SIM card is used to send and receive data between authorised family or carer mobile telephones. To obtain location details of the tracker a text message or a phone call is made to to the tracker. A return text is sent to authorised mobiles containing: A hyperlink to Google Mapping, location coordinates. Any internet enabled mobile telephone can quickly view the location details on Google Mapping. Coordinates can also be entered into a mapping service via a PC or notebook/pad. WHAT DOES IT COST TO RUN?With the MT-02 tracker there are no monthly or annual subscription charges.PAY-N-GO SIM CARD - The only costs are for sending location and warning text messages when requested by authorised mobile phones. Emergency calls are charged to the SIM card the same as a mobile telephone. Using GPRS data is charged at mobile network rates. GPRS data is only used by the tracker if set up to do so by an authorised mobile (family or carer)CONTRACT SIM CARD - Some very good deals are available for contract SIM cards (no phone supplied) ranging from £8.00 per month upwards. With a contract SIM a bundle of free text messages and free call minutes are included in the monthly rental. It is unlikely tracker usage would exceed contracted usage allowance.There are no monthly or ongoing costs with the MT-02. All that is required is a mobile telephone network SIM card, contract or pay as you go. Note: When using GPRS, data transfer is charged by the network vendor.