Electronic locks that are used for the home generally use a keypad or push buttons to enter group of numbers to unlock doors. Today there are more electronic locks available that you can open using a keyless entry fob. They are like the ones that you use to lock and unlock your car. Some even work using your computer or smart phone.
from Home Improvement:Security Articles from EzineArticles.com http://EzineArticles.com/9584325
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