Looking for nonmagnetic input device (MRI)

I'm looking for nonmagnetic input device like data glove. I plan to
conduct an experiment using 1.5T fMRI and I want input device like
data glove for our research. I found the homepage :
http://www.5dt.com/products/pdataglovemri.html 5DT Data Glove 5 MRI.
However, I cannot know the capability for details. Please let me know
if you have the Glove or the information of nonmagnetic input devices.

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