DESC: Low-end GPS satellite navigation systems fall into two categories: PDAs with bundled route-planning kit, and dedicated navigation devices. Asus' MyPal A636 falls between the two: it's a Windows Mobile 5.0 device, incorporating Bluetooth and Wi-Fi, so it has all the hallmarks of an up-to-date PDA. But the hardware has clearly been designed with GPS in mind rather than accessing personal information, so it looks like a dedicated unit.