A method recognizes a set of traffic signs in a sequence of images acquired of a vehicle environment by a camera mounted in a moving vehicle by detecting in each image, a region of interest using a parameter space transform. This offers business proprietors, contractors for telecommunication services, service resellers, OEMs and service providers the ability to authorize users, particularly users of mobile communication terminals, hereafter referred to as the \u201cOwner,\u201d access to package services. A vertical flange extends generally perpendicular to the base and the vertical flange defines a ring portion having an opening adapted to receive a finger. The switching power converter may then adapt its switching operation to achieve different regulated output voltage andor current to accommodate the detected electronic device.