General Pattern phone lock. Is it secure?

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http://androidforums.com – I am wondering how secure my Smart phone is? I have banking and other sensitive apps on it. Right now I have it set so that I have to input my password on every app that uses one every time I use it... A real pain. I keep the phone locked with the standard pattern lock with a a pattern that hits 6 of the dots. In a not obvious pattern. How secure is the pattern lock? What is the best way to really secure this smart phone. (General)