In May 2011, the Province of Ontario was about to become the first province to establish a Silver Alert. That program has not yet been implemented. https://news.ontario.ca/opo/en/2011/05/watching-out-for-ontarios-most-vulnerable-seniors.html
The National Post commented on this development. "Ontario shouldn't have shelved its plan for a "Silver Advisory" system" (January 26, 2015). http://nationalpost.com/opinion/national-post-view-ontario-shouldnt-have-shelved-its-plan-for-a-silver-advisory-system
In British Columbia, the family of Shin Noh called for an official Silver Alert program in February 2014. A private member's bill for a Silver Alert was introduced but failed to pass in 2014.
The BC Silver Alert, a social media tool, was created in September 2014. http://bcsilveralert.ca
In 2017, the Province of Manitoba, amended their Missing Persons Amendment Act to introduce a Silver Alert.
In 2017, the Province of Alberta amended the Missing Persons Amendment Act, 2017 - to include a "Silver Alert" program. http://www.qp.alberta.ca/documents/Acts/2017ch23_unpr.pdf
Silver Alert has become an increasingly used public notification system in the United States, to broadcast information about missing seniors with Alzheimer's.
At present, 36 states have official Silver Alerts or similar programs to find missing seniors. Some Silver Alerts have broader criteria than conventional programs, for example: “Missing Senior Citizen Alert” or “Missing Vulnerable Adult Alert or “Gold Alert.” https://en.wikipedia.org/wiki/Silver_Alert#National_growth
Efforts have been made to federally-introduce a National Silver Alert Act ‑ an initiative endorsed by leading stakeholder organizations including Alzheimer’s Association and the National Association of Police Organizations.
Most states with Silver Alerts release public statistics.