It's better quote news article from CBP themself. I emphasize "backcountry" for you.
CBP expands ROAM app pilot to Glacier National Park | U.S. Customs and Border Protection
SWEETGRASS, Mont. — U.S. Customs and Border Protection Office of Field Operations is pleased announce the addition of Waterton, Alberta, to the list of pilot locations now using the new Reporting Offsite Arrival-Mobile (ROAM) application for pedestrian reporting.

CBP has expanded it's ROAM app pilot
program. This pilot expansion includes
pedestrians traveling to Goat Haunt,
Montana, via the International Cruise
Line and/or backcountry hiking trails
via Waterton International Peace Park
in Alberta, Canada, and Glacier National
Park in Montana.
This pilot expansion includes pedestrians traveling to Goat Haunt, Montana, via the International Cruise Line and/or backcountry hiking trails via Waterton International Peace Park in Alberta, Canada, and Glacier National Park in Montana.
This pilot addresses a pressing issue for border waters and backcountry trails that depend heavily on tourism. Vacationers and outdoorsmen from around the world travel to these border areas with their families to enjoy both countries’ national parks. Oftentimes these groups travel into the United States by way of the Waterton Shoreline Cruises in Waterton which requires checks by U.S. Customs and Border Protection at the Goat Haunt Port of Entry when the intent of the traveler was to cross into the United States and hike backcountry trails in Glacier National Park.
The new pilot program will launch on June 16 at Waterton Cruise Company, which docks in Waterton. It is designed to allow travelers intending to cross into the United States via the international cruise line to be inspected by U.S. Customs and Border Protection through the ROAM application. Four inspection kiosks will be stationed at the Waterton Cruise Company docks for travelers to create a profile and declare their intended trip into the United States.
The ROAM app allows boat passengers and hikers the flexibility of reporting their arrival into the U.S. from any location via a device that is capable of 4G/LTE or Wi-Fi. The ROAM app is available in the Apple and Android stores under CBP ROAM. The ROAM app enables a video conference with CBP officers to efficiently make entry into the U.S.
Intending visitors to the United States can construct a profile within the application, and submit their information for a CBP video conference while at the docks, waiting to board the International vessel. Traveler information can be easily saved within the app, or recreated for future crossings.
CBP's remote arrivals app to launch nationwide -- FCW
- By Mark Rockwell
- Jun 15, 2018
Near Waterton Lakes National Park in Canada (above), a U.S. border crossing app recently went live. (Photo credit: Jason Patrick Ross/Shutterstock)
A new mobile app from Customs and Border Protection will make life easier for pleasure boaters and hikers in border areas, while freeing up border agents for enforcement operations.
CBP hopes its Reporting Offsite Arrival-Mobile (ROAM) app will be useful for small boat operators and their passengers, as well as hikers and other outdoors enthusiasts, who enter U.S. waters and territories in their travels in border regions.
The app is for travelers who want to be processed by CBP upon entry into the U.S.
"Most travelers want to be compliant" with immigration law, and the app makes it easier to do that, said Christopher Wright, program manager for CBP's office of field operations--innovation.
Use of the app by travelers will free up agents to enforce immigration rules against travelers who don't want to comply, according to Wright. The app "is more a reallocation" of agents from compliance work to enforcement, he said.
The app works on LTE- or Wi-Fi-capable mobile devices and allows CBP agents to initiate a video chat after travelers set up a login and profile. Wright said CBP has also partnered with Wi-Fi-equipped local businesses in remote areas where cell coverage is limited and set up kiosks at those businesses.
ROAM replaces CPB's Outlying Area Reporting Stations (OARS), which uses 90's era, one-way video transmission capabilities and speakerphones at remote marinas and docks. Those systems, according to the agency, are outdated and challenging to access.