Why Apple Watches Won’t Work If Your Wrist Has Tattoos?

If your mother hates tattoos, so does Apple watches!

Why Apple Watches Won't Work If Your Wrist Has Tattoos?

I’m sorry folks but according to your favorite Apple store, your Apple watch may not work properly when it is worn over tattoos.

According to BBC News, Darker-coloured artwork and even changes in darker coloured skin types can fool the light sensors on the back of the watch. The problem is not exclusive to the Apple Watch, which performed well in independent tests. But it does show the manufacturer has not solved the sensor problem.

Because dude, it has sensitive sensors!


Permanent or temporary changes to your skin, such as some tattoos, can… impact heart rate sensor performance. The ink, pattern, and saturation of some tattoos can block light from the sensor, making it difficult to get reliable readings,” Apple said.

The watch uses green LED lights combined with light-sensitive photodiode sensors to detect the amount of blood flowing through the wrist, which can then be used to calculate heart rate.

Why Apple Watches Won't Work If Your Wrist Has Tattoos?

Not only that, according to Matt Siegel, a journalist for the Reuters news agency said that,

The watch locks on tattooed skin and does not deliver the soft pings that alert a user to incoming messages. The heart rate readings were also significantly different on tattooed and untattooed wrists.”

The videos posted on Youtube have shown users with wrist tattoos attempting to log a work out session, only for the watch to appear to intermittently pause the stopwatch when it failed to detect the wrist. The problem, on the other hand, is not unique to the Apple Watch.


Several smart watches and wearable fitness devices that use similar sensor technology have also been reported to struggle when worn on darker colored skin. In these cases the amount of light reflected back from deeper-coloured pigmentation of the skin is less than the device is calibrated for.

According to Consumer Reports, the technology in Apple’s watch does not appear to be of a low standard. It performed well in independent tests against leading heart rate monitors. Furthermore, some reports say that the Apple Watch and reported that its heart rate monitor system is more advanced than most, offering potential functions that Apple is not currently promoting.

Why Apple Watches Won't Work If Your Wrist Has Tattoos?

Apple’s heart rate monitor is actually a plethysmograph. It looks and acts like a pulse oximeter, but Apple isn’t claiming it can measure your blood oxygen level. Why? Beats us. Our best guesses involve FDA [US Food and Drug Administration] regulations.”

It seems that the sensor and monitor functions of the Apple Watch are fairly advanced, but that the technology giant has yet to solve the known problems presented by darker-inked skin.

We’re not surprised the Apple Watch has run into problems with tattoos as it uses similar optical heart rate monitoring tech as the Fitbit Charge HR,” Sophie Charara, contributing editor of Wearable Technology.

Why Apple Watches Won't Work If Your Wrist Has Tattoos?

Apple now needs to offer users the option to disable the pin code security when the smart watch doesn’t detect your wrist. The winning wearable tech in the next few years will be the devices that work with our bodies, not the ones that ignore them.”


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