Apple has recently filed a patent which is all about shoes. Apple are wanting to tell you when you need new shoes and also allow you to know how far you have travelled by foot.
The patent application has a sensor in the heal of your shoe, with alerts showing up on a LED display or by a speaker.
Apple’s patent application includes the following summary:
A body bar sensing system for sensing movement of a body bar may be provided. The body bar sensing system may include a housing having a coupling mechanism operative to couple to the body bar, a detector disposed within the housing and operative to sense movement of the body bar when the housing is coupled to the body bar, and a processor operative to determine a number of repetitions of the movement based on the sensed movement.
In one embodiment, a shoe wear out sensor includes at least one detector for sensing a physical metric that changes as a shoe wears out, a processor configured to process the physical metric, over time, to determine if the shoe is worn out, and an alarm for informing a user of the shoe when the sole is worn out.