Data collection technology

Please Identify and describe several automatic data collection technologies. Thank you to anyone for the information that you give, god bless....

Magnetic loops placed in the asphalt at traffic lights detect automobiles by using the vehicle like a metal core in a transformer to transfer current by induction.

Pressure pads installed in mats are used to count foot traffic.

GPS recorders are installed on fleet vehicles to track where they've been and whether they're being operated at excess speeds.

Strain gages are used to detect when equipment is approaching the limits of it's operating capacity.

Digital card readers are used to keep records of who has been in high security areas by the employee inserting a magnetic card in the card readers to open the doors.

Facebook uses the "Like" button to determine what ads to serve when you log on to your account.

Topographic lasers are used for terrain mapping.

Informatics Outsourcing is a Market Research Company, they are providing Market Research Data Collection service using lot of techniques.