Hacking is sometimes not a bad thing.  There are some Bluetooth Hack softwares that you can use to hack your own mobile phones and pdas.  There are times when we ourselves want to test our own network security so instead of bringing it somewhere else we can hack it ourselves.  I heard there is no hassle in installing and in configuring of hundreds of tools.  This software can run on almost every computer so you won’t have any problems.  But you should remember that this is illegal if you use it other than your own.