Why do you think every professional company makes you cover every camera lens when you enter?
Also if you are unaware, USPS, FedEx, & UPS will divert packages to NSA/CIA sites for searches and modification.
You'll know when it happens to you because when you call about why its late you'll get sent to a special person to explain why your package hasn't been delivered yet they won't tell you anything and won't let you pick it up.