1. A method for wireless device positioning, the method comprising: in a wireless communication device: capturing one or more images of one or more sources of textual information in the vicinity of said wireless communication device; extracting text from said one or more sources of textual information; and determining a position of said wireless communication device based on a comparison of said extracted text in said captured one or more images to text in a stored database of textual information, wherein the determining a position comprises, at least in part, determining a distance to a letter at a beginning of the one or more sources of textual information, determining a distance to a letter at an end of the one or more sources of textual information, and triangulating the position using the determined distances.
1. A method for wireless device positioning, the method comprising: in a wireless communication device: capturing one or more images of one or more sources of textual information in the vicinity of said wireless communication device; extracting text from said one or more sources of textual information; and determining a position of said wireless communication device based on a comparison of said extracted text in said captured one or more images to text in a stored database of textual information, wherein the determining a position comprises, at least in part, determining a distance to a letter at a beginning of the one or more sources of textual information, determining a distance to a letter at an end of the one or more sources of textual information, and triangulating the position using the determined distances. 7. The method according to claim 1 , comprising downloading and storing said database of textual information when GNSS signals sufficient for positioning are no longer received by said wireless communication device.