Read the following paragraph.

RMIT’s School of Fashion and Textiles sponsors projects in various areas. Research at the school includes functional performance textiles for sports, fashion, and design. Projects range from wearable technology to protective fabrics – even sports apparel that can monitor your performance.

What’s next? How about intelligent, protective textiles, and wearable technology that can make you invisible?

In the above context, the word 'monitor' could mean ______________.