Lanxon writes "Designer Dominic Wilcox has come up with a Pinocchio-style 'finger-nose stylus' that lets you use your phone hands free, reports Wired. He came up with the design after he found that he wanted to use his touchphone in the bath. A wet hand is not a good touchscreen navigation device, so he found himself using his nose to scroll, but found it hard to see precisely where his nose was touching the screen. The solution was to create a nose extension 'finger' that would allow for navigation while holding the phone firmly in his one dry hand."
Computers are unreliable, but humans are even more unreliable.
Any system which depends on human reliability is unreliable.