Taken from:
http://news.cnet.com/8301-1023_3-57405580-93/iphone-passcode-cracking-is-easier-than-you-think/?tag=cnetRiver
The article suggests that in under two minutes an expert (with the right software package) can break the four digit code on your iPhone.
While I'm not necessarily in favor of a longer passcode (like 10 characters and must have special characters, and upper and lower case letters, and must be changed frequently), a passcode does keep casual intruders off (like when you put your phone down on a table at lunch - your 'friends' can't get in too easily).
The best method would be not to lose your phone - keep it with you!!!
http://news.cnet.com/8301-1023_3-57405580-93/iphone-passcode-cracking-is-easier-than-you-think/?tag=cnetRiver
The article suggests that in under two minutes an expert (with the right software package) can break the four digit code on your iPhone.
While I'm not necessarily in favor of a longer passcode (like 10 characters and must have special characters, and upper and lower case letters, and must be changed frequently), a passcode does keep casual intruders off (like when you put your phone down on a table at lunch - your 'friends' can't get in too easily).
The best method would be not to lose your phone - keep it with you!!!