Frequently asked questions
Short answers on hardware, recording, data protection and buying. If something is missing here, ask — the question probably belongs on this page.
Hardware and garments
Which sensors do the garments take?
All Momega garments carry Movesense® sensors. Sensors detach, so one set moves between garments and between participants.
Can I use sensors I already own?
If they are Movesense Flash, MD or HR2, yes — those are the models the garments and the analyses are built around. Other sensors do not provide the accelerometer and gyroscope data in the format that the analyses need. Ask for a quote to customize analytics for other IMU sensor manufacturers.
What sizes are available, and how do I choose one?
MAIJU comes in five sizes by body length: 68, 74, 80, 86 and 92 cm. Choose the size that fits snugly at each sensor pocket while leaving the child free to move; the straps beside the pockets take up any slack. NAPPA sizing: ask in the quote request.
How are the garments washed?
Take the sensors off first. MAIJU: machine wash at 40 °C with a detergent intended for synthetic materials, then check the pockets and seams for wear. NAPPA: machine wash at 40 °C with standard detergents. The sensors themselves are water resistant but are not meant for repeated laundry cycles.
How long does a recording last on one charge?
The sensors run on a replaceable CR2025 coin cell. In the published recording protocol one cell lasted a full day (12–24 hours) of continuous streaming; battery brand and the Bluetooth conditions both affect it, and logging to the sensor's own memory instead of streaming draws less. Check the charge level in Tessalogger before a session.
Are the garments a medical device?
The garments or the analytics are not as of yet a certified medical device in any jurisdiction.
Recording and data
What do I need to run a recording?
A garment, sensors, and a device that runs the Tessalogger app. The app is included with every garment purchase. Tessalogger starts and stops recordings, downloads raw data to your own device, and uploads to Tessacloud when you have analytics. Further analytics run on the cloud and are purchased separately.
Does the recording need a phone nearby the whole time?
It depends on the sensor. Movesense MD and HR2 stream to the phone, so it has to stay within Bluetooth range — in practice the same room, or about ten metres. Movesense Flash logs to its own memory and is downloaded afterwards, so the phone can be put away. NAPPA computes its sleep measures in the sensor, so no model needs to stream for a night recording.
In what format do I get the raw data?
The raw data per sensor can be downloaded as ASCII .csv or binary .sbem files.
Do I have to buy analytics to use the garments?
No. Garments and sensors are a one-time purchase and give you raw data through Tessalogger. Cloud analytics is a separate subscription.
Can I run the analyses on my own server?
The analytics pipelines are primarily cloud only. You can download the raw analysis outputs for further use on your own system. Ask for a quote on the pricing for a local deployment.
Privacy and compliance
Where is uploaded data stored?
Tessacloud is hosted on Microsoft Azure servers, physically located in Sweden. Tessacloud does not store or process any sensitive patient data.
Who is the controller and who is the processor?
The customer is the data controller and Momega Ltd is the data processor.
Can I get a data processing agreement?
To write: Standard DPA is not yet available.
How long is data retained, and can it be deleted?
Customer data is stored for 1 year after the end of subscription. The customer is the primary handler of the data and can delete it any time.
Do you need ethical approval before I start a study?
It is up to the research question. Typically research on human infants requires an approval from an ethics board. We are happy to provide supporting documentation for ethics applications.
Buying and support
How do I get a price?
Through the quote request form. There is no price list: every quote is put together for the study in question — garments, participant numbers, the analyses you need and over how long.
Do you offer academic pricing?
Pricing is prepared per request rather than taken from a list, and the setting — academic, clinical or commercial — is part of what it is based on. Say which you are in the quote request.
Can we trial the system before committing?
Ask for a quote on a pilot set including one set of sensors, one garment, and free-of-charge analytics for a set amount of recordings.
Where do you ship, and what is the lead time?
We ship globally. Shipping and handling, customs, and other regulatory costs vary locally.
What support is included?
Critical technical support is provided by the developers of the original algorithms. More intensive, study-specific support and conslutation services can be bought separately (ask for a quote).
Still stuck?
Technical questions and bug reports go through the feedback form. For anything about pricing, licensing or a study you are planning, the quote request reaches a person who can answer properly — mention the protocol and we can usually say quickly whether the devices fit it.