Oh Hey World is a service that lets users check in with multiple people via text or email with one click when they arrive at a new location. It also allows them to quickly share their new location across multiple social networking sites. Additionally, Oh Hey World shows users people they know who are near their location and helps follow friends while they travel.
Developers working on applications that involve knowing the user's location or time zone can use Oh Hey World to help keep user locations current. The Oh Hey World API accepts a username as input and returns that person's current location. Contact the provider for further documentation.