Gun chips?

If the animals we love can get chips inserted into them so we can find them, then why not 'chips' for guns, rifles, assault weapons etc.  This in addition to background checks for those who purchase these products.  If these guns are used in the commission of a crime, it would make sense it wouldn't be the one who registered them,  just a good way to perhaps follow the path of the perps and stolen weapons.................marge