how police use electronic devices to trak people

Modern day police now use the internet, cellphones, Gps to track people. Every one uses social medai and we post our information on the internet, which at any given time can be used to track individuals by the police. Mordern day police have accounts with social medai, e.g facebook and twitter, if there is a missing person investigation have became very easy to track the missing and the abductor. Most people don't realize that we are being watched all the time hence some people post uncalled for information vai text messege or social medai which in the end the police use this as evidence of a crime. Police actually go on facebook and twitter to look for criminals and a lot of unlawful characters have been traked using these devices. Police can also use the GPS to track your whereabouts.