It all starts with data

ACT Head Impact Tracker is measuring device for forces acting on a head while doing sports.

It can help to prevent the unnecessary head impacts, which will prevent the head injuries they would have caused and the contribution they would have made to the brain diseases.

1. Make forces acting on a head visible and measure impacts objectively.
2. Use data to complement visual observation and act on it.
3. Enable creation, enforcement and compliancy tracking to effective plans, actions, practices, and procedures to decrease the number of head impacts, decrease their magnitude and frequency.
4. Apply suitable sideline evaluation procedures and tools.
5. Use data to improve understanding, advocate the change in attitudes and behavior.

ACT Head Impact Tracker head sensor

Measures impact forces acting on a head. You can attach it to a wide variety of helmets, head wear and accessories with hook and loop -tape (Velcro) or other such adhesive. Or purchase dedicated accessories in our web store.

ACT Head Impact Tracker smartphone mobile App, Cloud and Browser Access

ACT Head Impact Tracker smartphone mobile App is needed to operate ACT Head Impact Tracker head sensor. The App enables you to create and manage User Account and Profile(s), add and act with ACT Head Impact Tracker sensors on your Profile(s), view and receive impact information, review Profile(s)’s impact history, share your Profile(s) Impact information with other Users, activate, use and manage Service features and functionalities.


ACT Head Impact Tracker cloud is where the information is stored, service and actions mostly take place in.



You can access your user account and get all the data on your profiles also via our WebUI browser access. In WebUI you get vast number detailed data on the measurements both in numerical and graphical illustrations, you can browse the data on your tablet or computer, and import your impact data to most common spreadsheets (such as Excel or Numbers) for example. You can access WebUI by clicking “Browser Access” (in Users column) in the bottom of this webpage.


Use App for data glancing and WebUI for data crunching!

What makes ACT Head Impact Tracker so unique?


ACT Head Impact Tracker head sensor can be used in visually any sport on a dry land.


ACT Head Impact Tracker head sensor can be attached with hook&loop (Velcro) tape to wide variety of head gear and wear, helmets and head bands. You can also buy our tailor made accessories: Headband or Dock.


For team sports and individual sports, to track one athlete or a team of athletes, for juniors and seniors, professional and recreational levels, men, women, boys, girls and anything in between.

Easy to use

Download the App, create user account and profile(s), add head sensors to the profile(s) and off you go


Head sensor’s dimensions are: 46,70mm x 34,40mm x 7,60mm


No need for extra gadgets such as large team charging units, dedicated hand held or sideline devices. No monthly fees for services you don’t need or want to use

Why you should measure every day?

Every athlete, coach, trainer, relevant team personnel, and parent can:

1. Track the impacts occurring.
High numerical values indicate more violent impacts.

2. When an impact occurs, act on it.
If no medical professionals are available on site to do the assessment, we recommend using well-established assessment tools, such as Pocket Concussion Recognition Tool 5®.

3. Keep an eye on the impact history.
When did the previous impact occur? How frequently the impacts occur? How many impacts have you had today/this week/this month/…?

4. Increase awareness and understanding, Advocate the change in attitudes and behavior.
Create awareness and understanding by bringing the forces acting on a head visible with objective measures. Educate when and why they occur and what they may cause. Aim for a good sportsmanship and increased respect, less risk-taking, using excessive force and foul play.

5. Take a stand and send a message.
Measuring the impacts and acting on them, signals to everyone involved that this matter is with very high significance and closely observed. Incidents will not go unnoticed and will be acted upon. No-one should fear for their life, health or well-being when doing sports. You are riding on the 1st wave to make this change.

Every coach, trainer and relevant team personnel can:

6. Track down the athlete/-s getting more impacts than their peers.
Address the issue with athletes at risk, reduce the impact load of the individual athlete/-s.

7. Identify the trainings and drills with most head impacts and/or load.
Modify them or lower their frequency in the training plan to decrease the impact load of all the athletes.

8. Identify the positions more prone to head impacts.
Keep an eye on the players in those positions and modify the training plans to reduce the impact load of the athletes in those positions.

9. Trained eye of a coach may detect technique with need of improvement.
Headings, giving and receiving a tackle for example usually show on the graphical illustrations on the forces. Compare the graphs to detect gaps in techniques.

10. Introduce and apply a suitable sideline procedure.
Demonstrating objectively that impacts are occurring should encourage coaches, trainers and team personnel to introduce and apply suitable sideline procedures.

11. Share with those who care and can help to reduce impact load.
Users can share their impact data with those who should know too. These can be for example parents, coaches, trainers, or co-athletes.

12. Lead the way.
Teams and clubs tracking the head impacts truly aim to do everything they can to monitor athletes on the pitch. Towards safer, healthier and happier sports for everyone.