1. A method for estimating a real-world distance with a mobile device, the method comprising: calibrating a tilt-sensitive sensor of the mobile device; orienting the mobile device toward an endpoint; estimating a height of the mobile device; receiving tilt-related data from the tilt-sensitive sensor; estimating a tilt of the mobile device based at least in part on the received tilt-related data; emitting, from the mobile device, a first signal; detecting a reflected signal; and estimating, via the mobile device, a multi-dimensional distance between the mobile device and an endpoint, wherein the estimated multi-dimensional distance is based on the reflected signal, estimated tilt and estimated height.