So the next Conservative Government will scrap the Contact Point database of children's details.

BBC: Cameron's data speech in full

It then combines this real-time information with ephemeris data, mapping, cellular base station and Wi-Fi access point database information, and other cloud-based aiding information using the SiRFusion platform.

ENGADGET: CSR sharpens indoor and in-car navigation with SiRFstarV, SiRFusion and SiRFprimaII

Contact Point is a vast database that holds the details of everyone under the age of eighteen in England, their name, address, gender, date of birth, school and health provider.

BBC: Cameron's data speech in full