Alphabet\u2019s digital city on Toronto\u2019s waterfront is in danger of becoming surveillance city unless data is stripped of personal details from the get go, according to one of the world\u2019s leading privacy experts. Ann Cavoukian will meet with Waterfront Toronto, the government organization overseeing the project, this week to seek a commitment that information collected will be \u201cde-identified at source.\u201d Cavoukian resigned as an adviser to Sidewalk Labs LLC, a unit of Google parent Alphabet, last month in protest over privacy concerns but said she would consider returning if this principle is ensured. \u201cIf you can\u2019t insist upon data being de-identified at source, you\u2019re going to have a city of surveillance because everybody wants access to personally-identifiable data,\u201d Cavoukian said in an interview. \u201cThat\u2019s the treasure trove and that\u2019s the exact opposite of what we want.\u201d Sidewalk Labs and Waterfront Toronto unveiled a plan to much fanfare a year ago to turn a 4.9-hectare (12-acre) patch of land on Lake Ontario into a \u201ccity of the future,\u201d showcasing everything from green-energy systems to new housing techniques. It\u2019s been embroiled in controversy from the start over how data from smartphones, sensors and the like, will be used, with Cavoukian\u2019s resignation the latest twist. The former information and privacy commissioner of Ontario emphasized that Sidewalk has never pushed back on de-identification at source but said it couldn\u2019t control what other companies would do. \u201cThat just set off all the whistles in my head,\u201d Cavoukian said. She was hired as a paid adviser by Sidewalk Labs last December to embed her \u201cprivacy by design\u201d framework in the project.