To request access to contact data, call theABAddressBookRequestAccessWithCompletion function after calling the ABAddressBookCreateWithOptions function.

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Many schools and sports medicine programs offer tests to athletes before they start contact sports to measure their cognitive function, which can then be compared with the same test administered after a concussion.

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Using the same accelerometers, a new calling function will dial whoever's contact details you have displayed when you raise the phone to your ear.

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That wire can ground a contact on the circuit board behind the light that triggers a function intended to allow the door to be opened with a remote button, bypassing all its security measures.

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