A Signal Method for Mobile Handheld Devices
A new type of digital signal method is presented for embedded systems including
mobile handheld devices. A digital communication method is suggested for mobile phone
and embedded devices using screen light signals that contain data such as game item,
payment information, personal information, and so on. The new method provides an
economic and efficient solution to mobile networking environment. We studied the
solutions focusing on payment system by updating embedded software without need of
additional hardware modules to mobile devices. The solutions can be used also for digital
item movement between mobile phones or game devices.