"They do have systems in place," she said in an interview. "They're just not that easy to find."
While there was stalking before there were social networks, social networks can add to a stalker's repertoire. "They add more tools to the stalker's toolbox to make it easier," she said.
As with all patents, just because a company patents a technology doesn't mean it will end up in a product.
Apple did not respond to a request to comment.
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