IV. SUMMARY
After several experiment and iterative trial and error, it
summarized that the use of twitter is kind of a good solution,
effective and simple as Indonesian people mostly have a
twitter account. The problem occurs when the process of
connecting to web server and processing a twitter message.
Arduino depends on the internet connection. Some weakness
also come out after deployment and testing, the system only
applicable for indoor usage as the PIR motion sensor will
perform a false alarm due to sudden heat and temperature
change. It can be from climate change [9] or there is a big
source of heat such vehicle and motorcycle exhaust.