Mr. Rawles,
Kwikset lock company makes a “bump-pick” resistant lock [called the SmartKey]. The new locks appear to have a bar that attaches to each of the pins that interact with the key, so if one pin moves then they all have to move. Therefore all the pins have to be in the correct place at the exact same time and there is no “slop” that allows the pins to be “bumped” into place. If you get a chance next time you are around a Home Depot store they with have a display model for these new locks as they can be re-keyed by the end user without taking the lock mechanism apart.
As a contractor I have found that Kwikset brand locks not of the highest quality, but I bet that Schlage will be making a similar lock soon. This might be something to look into. – Brian S.