COVID-19 vaccination policy, as some businesses have publicly pledged to ignore the rules.Most of the incidents reported to police since Wednesday, when the new vaccine certificate system went into effect, involved people who refused to show proof of vaccination.Peel Regional Police said Thursday it had received seven calls about customers not showing proof of vaccination _ five incidents at gyms and two at food establishments.The police force provided minimal details on what happened in the interactions but noted the customers who entered without showing proof of vaccination left before police arrived in two reported cases.