While Sony will only guarantee the GPS system works with its digital still cameras, it should be compatible with any digital camera that produces JPEG images compatible with the EXIF2.1 standard, said Masayo Endo, a spokeswoman for the company in Tokyo.

The GPS unit will run for about 10 hours on a AA cell and the unit's internal 31MB memory can store about 15 days straight worth of GPS data. The triangular unit measures 9 cms long by 4 cms wide and weighs 55 grams.

Sony also announced its DSC-T10 digital camera. The 7.2-megapixel camera boasts as its key features a high sensitivity of ISO1000 and optical image stabilization. Both features can minimize blur on shots, particularly in low light conditions

GPS (global positioning system) CS1 unit is going to be next best friend of Travel and Street Photographers. GPS is intended to be attached to a belt and worn throughout the day as pictures are being taken.

Every 15 seconds it records the current location and the time thus building up a record of exactly where the user has been during the day. Later that data can be matched with the time stamp on the digital images to work out where the picture was taken.

Sony supplies an application called GPS Image Tracker to handle this data matching and it's recorded in the meta data stored in the JPEG file. A new version of Sony's Motion Picture Browser software now allows