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nnnnn early adopters of new technology always running the glitches the apple watch work is a little different anybody who has a wrist tattoo is probably frustrated if they shelled out for one of the pricey devices reuters matt siegel in sydney is one of them i should be turning murderous and every time i look at the watch , shouldn't be locking itself every single time , not that should also be getting the alerts when people send me email , it's the middle of the work busiest time , i phone and my ipad but nothing's coming through on my apple watch which tells you that there's something going on because they're all linked , to be clear it's got nothing to do with how dark your skin is rather the ink in a tattoo messes with the watchers infrared heart rate sensor , melanin in skin absorbs less light than inca meaning the censor the watches as to detective it's on a person pretty much useless somebody who has tattoos on both arms for example would have to find a third or fourth appendage to wear it on , and that can create all kinds of problems for our