Here’s an example of it in practice: https://www.cbc.ca/news/canada/hamilton/why-police-wanted-search-rodger-kotanko-1.6336188 https://www.cbc.ca/news/canada/ha

Here’s an example of it in practice: https://www.cbc.ca/news/canada/hamilton/why-police-wanted-search-rodger-kotanko-1.6336188 https://www.cbc.ca/news/canada/hamilton/why-police-wanted-se... Other info is a google away, just search for reconstructed serial numbers or similar queries. It’s not exactly a secret, but how successful it can be is.