Just go to the regular online store with the key. Are safe, but when we choose a store, we must look at the qualifications held by the shop, we must not be cheap, or go online with keys, especially with chips or it has its security. Where is it?
If it is not formal, it is easy for information to leak out, resulting in the loss of some property
Online as long as it is a formal channel, more safe, but try not to buy online, that place to buy things are generally not very safe.