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Why You Should Have a Key Spare Make a spare car key before you lose it to save money. A new key from a dealership can be expensive. It's less expensive to make copies. A spare key can also help avoid stressful and costly situations. It can prevent you from losing your keys and being trapped outside your car. Peace of Mind The primary use case for getting a spare key is to guard against the stress and anxiety of being locked out of your house or car. Being able to open the door in this scenario instead of calling an emergency locksmith, and possibly