Using Blender for model design and 3D printed at the EnVision Lab, I made a wearable finger (hollow inside) with fingerprint and thorns. Then, I wore it on campus to conduct an intriguing behavioral test. ( see details below )
I found people are more getting used to their finger to pay or unlock sensitive personal info. For me, I almost took it for granted and subconsciously unlock my bank account app every time with my right-hand thumb.
Granted, it is the super smooth interaction and tech that enabled such thoughtlessness and effortlessness. However, I found it necessary to remind people that don't over-place their trust and should be more cautious the next time they use their finger to unlock personal privacy and accounts, just as there are thorns on your finger.
I tried on my wearable finger and with my iPhone's add fingerprint UI on
To make the finger wearable, it requires me to make the inner hollow. I used the boolean feature to mask it, cutting it with a cylinder, which had a changeable radius and angles.
Use Boolean tool to mask object
Step1: prepare a solid finger
Step2: make a cylinder that has a little bit smaller radius ( leave space for the shell )
Step3: prolong the cylinder inside, and done
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Using transparent mode to adjust the inside caving.
Sharp thorn & beautifully smooth inner finger ( so I can wear it comfortably )
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The thorn was not sharp & the inner is poorly caved :(