Charts with self-adhesive reflectors are sold for the head mouse. The reflectors are expensive and can only be used once. An alternative is self-adhesive reflectors that can be purchased in hobby stores.
The user goes through 2 – 3 reflectors per day. The reflectors from the hobby store can be cut into many individual reflectors and are much less expensive than the reflectors that come with the head mouse. They work very well, even somewhat better since they can be cut a little larger.
For example Hobby Store
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