Post Office, UPS, FedEx , DHL and every other shipping company use a algorithm. If they see a someone checking a tracking number one too many times the website automatic FLAGS the package thinking that someone mailed something illegal. Then they will probably intercept package and take a further look. If you are going to track your package use a VPN service. It hides your IP address so if they do intercept your package and find something illegal they will not have your IP address on file and not know who was tracking the package online. One less thing they can use against you. Just some information when ordering. Now if you not ordering anything illegal then you do not have nothing to worry about.