FiveFor example, tied in the hands of children, the elderly, the family can see the child through the mobile device, the elderly where they are now. Lost can also find back? But the vast majority of the need for SIM cards, there is no need for a similar SIM card locator? Can you recommend a brand?
No, you have to insert the card, you can buy a monthly card, it is only the amount of communication fees, and very cheap
At present, it is impossible to have such a product.After receiving the signal from the GPS satellite, the GPS locator obtains the latitude and longitude information through the software calculation. This information must be sent out to be received by other devices, so that people who need to know the location of the locator get this information. So in the current circumstances, the launch of information, but also with the help of the mobile phone network, there is no other public network can be used, so the phone's SIM card is essential.
There is no need to insert the SIM card GPS locator? FiveFor example, tied in the hands of children, the elderly, the family can see the child through the mobile device, the elderly where they are now. Lost can also find back? But the vast majority of the need for SIM cards, there is no need for a similar SIM card locator? Can you recommend a brand?Kissno07Recommended 2016-02-05 06:57:58 best answerPositioning principle:Positioning satellite signal to obtain latitude and longitude,And then upload the latitude and longitude to the server through the network,The server analyzes the specific location,People search the location of the locator by phone or computer;If there is no SIM card, then the latitude and longitude of the device can not be issued, we can not query the location of the device, so there is no SIM card GPS locator does not exist;If applied to navigation, you do not need to upload latitude and longitude information, direct calculation of latitude and longitude in the local navigation and then you can, do not need a SIM card.
