Run data on the coach's phone before the athlete reaches the lift
When mobile connectivity is on, each run is on the coach's phone within seconds of the finish.
Splits, speed, line, and the overlaid clip, ready before the next one starts.
Feedback that arrives before the next run
Feedback close enough to matter for the next run
Alpine training is expensive and on-snow time is short. A coach's feedback is more useful when it arrives before the athlete pushes off again, and an athlete learns more from a run when they can see it while it is still fresh.
Fast Feedback is the part of Protern that closes the gap between a run finishing and the next one starting. It comes down to three things working together: data that streams to Protern as the athlete skis, video that already has the data overlay when the coach opens it, and sensors that stay with the athletes at the end of the day.
What makes the loop that fast
Three things have to line up for run data, video and review to meet on the lift ride. Fast Feedback puts them in the same workflow.
Run data streams as the athlete skis
With optional mobile connectivity, the Protern Sensor (Live) streams run data to Protern as the athlete skis. Within two to three seconds of the athlete crossing the finish, the run is on the coach's phone, ready to review. Splits, speed, line, lateral force and acceleration are already there.
The data overlay appears on the clip on its own
Clips filmed on a phone get the data overlay as soon as the run data is in, usually within seconds of the finish. Clips from a video camera get the same overlay on import. The coach does not have to match a video to a run.
Sensors stay with the athletes
Because the sensor streams data as it is recorded, athletes keep their own sensor at the end of the session and charge it overnight. Nothing to collect, nothing to hand over.
From finish to feedback in one lift ride
The coach is on the course, running the timing and watching the runs. The athlete finishes and rides the lift back up. The data reaches the coach's phone a second or two later, and the overlaid clip is ready.
While the athlete is on the lift, the same run data and overlaid video are on the athlete's own device. The coach gives feedback over the radio, the athlete watches the run with that guidance, and the next run starts with something specific to work on.
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Athlete crosses the finish
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Run data is on the coach's phone within seconds, and the data overlay appears on the coach's filmed clip on its own
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On the lift ride, the athlete sees their run data and the overlaid video on their own device
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Coach gives feedback over the radio while the athlete reviews the run with that guidance
Athlete-side video access is part of Fast and Automatic Video Access: clips and overlays appear on the athlete's account as soon as the coach films, with no exporting or sending.
Sensors stay with the athletes at the end of the day
At the end of a session, the sensors stay where they are. The data has already moved as the runs happened.
The coach walks off the hill with nothing to carry, and the athlete keeps the same sensor in the bib for the next morning.
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Athletes ski their last run of the session
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Every run is already in Protern
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The sensor stays with the athlete and they charge it overnight
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Next morning, bib on, same sensor, ready to ski
Bluetooth and USB sync are still there for any session that ran offline. For the full picture of how data moves between the sensor and the team, see Fast and Easy Workflows.
Offline is a full version of the product
When the day runs offline, the data is the same
Not every training day has mobile connectivity. Some coaches prefer to keep it off. Some ski areas do not yet have coverage. Chile is the one country-wide exception, with mobile service launching in 2027, so teams training at Portillo, Valle Nevado or La Parva sync the sensor over Bluetooth or USB in the meantime.
Offline is a full version of the product. The sensor records every run to its own memory at the same accuracy, syncs to a phone over Bluetooth or to a computer over USB, and the full Protern analysis runs the same way. The trade is when the data appears, not how much of it the coach gets.
For the global mobile coverage details, including the Chile exception and the no-roaming model, see Connectivity.
Start your program on the loop that closes before the next run
The Protern Sensor (Live) is the hardware that makes the loop work, and the Protern Pack (Live) is the fastest way to start.
If your program has five or more athletes, talk to us about team pricing.
Explore what else you can do with Protern
Each Protern capability supports a different part of the training and analysis workflow. Explore the other capabilities below to see how they work together in daily training.
Data-Linked Video
Review video with performance data shown directly on the run to clearly explain what happened and why.
Clear Performance Comparison
Compare runs and athletes using video and speed analysis to understand where time is gained or lost.
Fast and Automatic Video Access
Video appears automatically for athletes, under coach control, so review happens without exporting or sending files.
Fast and Easy Workflow
Reduce setup and manual handling by managing timing and video together in one simple workflow.