Casino clients who recognize that they have a gambling addiction can benefit from the self-exclusion program operated by the OLG. An investigation conducted by the CBC's The Fifth Estate (TV series) in late 2017 led to concerns as to whether the program is effective. According to a CBC article, "Gambling addicts ... said that while on the ... self-exclusion list, they entered OLG properties on a regular basis" in spite of the facial recognition technology in place at the casinos. As well, a CBC journalist who tested the system found that he was able to enter casinos and gamble on four distinct occasions, in spite of being registered and photographed for the program. Previous studies in other countries have also confirmed that self-exclusion programs can be difficult to enforce.