Antigone Davis admits there's "no 100% guarantee when it comes to photo-matching technologies".
That's because it's possible to manipulate images so they're different to the original. But she says they are getting better at it.
This whole system only works if you actually have the image you're worried about.
If, for example, your ex took a load of photos on their phone and you don't have them, this idea doesn't help.
The UK's Revenge Porn Helpline has seen huge year-on-year increases in reported incidents since it was launched in 2015.
The hotline received just over 500 reports in 2015 and more than 1,000 in 2017.
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