eTact® activity and temperature monitor

e-Tact® is an innovative device from BodyCap to measure activity levels as well as raw acceleration data and give an indication of skin temperature.

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Solution for reliable and accurate actimetry monitoring

Actimetry allows the fine analysis of physical activity to better understand the segmentation of the sleep/wake rhythm and the sleep quality of the subject in the context of sleep disorders, to control the implementation of an adapted physical activity program, to monitor patients suffering from chronic disease, etc.

Integrating a 3D accelerometer, the eTact® patch collects the subject’s activities and gives access to a skin temperature indicator.

The solution collects actimetric data using the TAT (Time Above Threshold) method. This method is the most commonly used in actimetry; it is based on the sum of the predefined acceleration threshold overruns over a given period. Once the data is downloaded from the patch, it can be used to create a histogram / actogram. The eTact® electronic device is rechargeable and reusable.

The solution can be also integrated to an existing ambulatory service using the BLE (Bluetooth 4.0) data communication capacity.


The eTact® solution is composed of:

  • A patch
  • A PC/MAC software eTact® Watcher dedicated to the eTact® patch configuration and data downloading
  • A dedicated USB cable allowing data transfer and power supply
  • A data analysis tool eTact® Analysis allowing to estimate daytime activities and sleep quality of the subject through indicators calculation

Depending on the use, the patch should be worn on the non-dominant wrist using a dedicated bracelet or fixed using a suitable bandage to any other part of the body. The data collected are directly stored in the internal memory of the patch. The battery autonomy of the patch is around 5-6 days, depending on the configuration used, but it can be recharged successively without the need to download the data stored.


eTact Patch


Key Benefits

    • Direct access to raw data
    • Ease of use and comfort
    • Customizable patch configuration
    • Patch positioning chosen according to use
    • Cost effective solution


Various applications

Sleep disorders
Worn on the non-dominant wrist, the analysis of the actimetric data makes possible to pre-evaluate several indicators of the sleep quality (sleep time, sleep latency, WASO score, number of night awakenings, …).

Clinical / basic research
The eTact® device was developed with the main goal of facilitating the actimetric monitoring of subjects in research protocols for: sleep / wake rhythm analysis, sleep quality pre-evaluation, physical activity load assessment, …

Adapted physical activity program / functional rehabilitation program
With frail people populations (elderly people, patients suffering chronic diseases, patient in post-operative rehabilitation program, etc.), the eTact® actimetric monitoring solution allows: a detailed pre-evaluation of the level of activity of the person, their sleep/wake rhythms, the workloads adaptation and an accurate monitoring of short, medium and long term results of the implemented program, objectification of the feedback provided to the subjects.

In the context of the detection of hyperactivity in children or in babies suffering from neonatal withdrawal syndrome, the eTact® solution allows to detect a decrease in infant activity, a precursor to weaning effectiveness.


Scientific references:

Makris et al 2020, Contrasting short-term temperature effects on the profiling of metaboli and cstress hormones in non-obese healthy adults. A randomized cross-over trial

Please contact us for further references.

Size W 37mm /  L 41 mm / H 7mm
Weight ≈ 9g
Sampling period for temperature measurement from 30sec to 30min
Sampling period for activity measurement from 30sec to 30min
Skin temperature indication 10°C – 45°C
Autonomy 5-6 days (depending on configuration)
Recharge time 2h
Storage 7 months

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