After leaving high school in 1949, the 17-year-old entrepreneur started Canadian Key and Lock Supply. As Aaron's expertise, reputation and contacts grew, Bell Canada approached him with a request to develop a keyless lock for their facilities. In 1964, the Unican pushbutton lock was launched.
By 1999, Montreal-based Unican and its subsidiaries and affiliates boasted more than 3,700 employees and worldwide sales in excess of $450 million. Two years later, a Swiss company, now part of Kaba AG, purchased the Unican Group. Aaron sat on Kaba's Board of Directors until his retirement.
For his considerable business accomplishments, Aaron earned a Lifetime of Outstanding Achievement award from the Associated Locksmiths of America and the Entrepreneur of the Year award from the Quebec government, the Bank of Montreal and several investment firms.