Decide Which One is the Best Communication Technology

Communication technology really confusing, because for me this technology almost the same which is to receive and transmit the data. The differences is that, how much the distance can this data will be transmitted or the limitation which is depends on the applications that applied to it. 

For this project which can be used and view to other place which far away for example, the PPG is attached to your grandparents at Sarawak and monitor it through smartphone to your place at Kuala Lumpur. This is quite long range since there are South China Sea separating you and your loves one. 

To overcome this problem, GSM is suitable choice. This is because, GSM enables individuals to be reached via the same mobile number in up to 219 countries. GSM uses General Packet Radio Service (GPRS) for data transmissions like browsing the web.