Two years after an outcry by privacy advocates in the U.S. and UK appeared to squelch its use, deep packet inspection is on the verge of a comeback, The Wall Street Journal reports. Deep packet inspection is more powerful than other tracking techniques "because it can be used to monitor all online activity, not just Web browsing," the report states. Two U.S.-based companies now pitching use of such services have said they protect user privacy with such steps as user consent. The FTC has stated providers "should, at a minimum, notify consumers that the ISP was mining the information and obtain clear consumer consent." (Registration may be required to access this story.)
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