TSA Pre-check is a membership program designed to expedite your way through security.
Global Entry expedites your way through security and United States Customs and Immigration.
Mobile Passport expedites your way through United States Customs and Immigration.
Here's what you need to know:
To apply for TSA PreCheck, visit: https://www.tsa.gov/precheck
To apply for Global Entry, visit: https://www.cbp.gov/travel/trusted-traveler-programs/global-entry
To download Mobile Passport, check your App store or visit https://mobilepassport.us/