Putting up an identity theft shied around all your personal information is virtually and literally impossible. Imagine all the very real places you have to provide your full name, date of birth, social insurance number, driver license and even a credit card number, complete with security code. Thankfully the vast majority of places that you provide this information are very safe and are using the information only in the way it is intended. Unfortunately there are many people out there that attempt to scam, fraud and lie to get your information. So while you can't put up a shield you can be careful with your information and report any abnormalities, irregularities or loss of any of your personal information immediately. Check your credit reports on a regular basis using one of the free credit reporting services. Placing fraud alerts through the credit reporting agencies will also result in you being contacted as soon as someone tries to use your personal information to secure a loan, make a large purchase or take out a credit card.