CNBC:

Apple has a team exploring a custom processor that can make better sense of health information coming off sensors from deep inside its devices, job listings show.

Here’s an Apple job listing for a Sensor ASIC Architect (ASIC being Application-specific integrated circuit).

Building custom chips for narrow functions can help Apple add new features and improve efficiency of its hardware while protecting its intellectual property from would-be imitators.

Rene Ritchie just posted an excellent Vector episode that talks about Apple’s chip ambitions. Apple’s chip investments are paying dividends and they are slowly specializing, expanding their proprietary chips, bringing capabilities to future products that other companies cannot simply copy.