What could someone evil do with a recording of me saying "Yes"? I have a YouTube channel and I've probably said that word in a few of them.
>The scam begins when a consumer answers a call and the person at the end of the line asks, “Can you hear me?” The caller then records the consumer's "Yes" response and thus obtains a voice signature. This signature can later be used by the scammers to pretend to be the consumer and authorize fraudulent charges via telephone.
In other words they splice together "do you want to authorize these charges?" And your "Yes" and present this as "proof" to the credit card company you authorized the charges you are disputing.
The "can you hear me" call would have to take place AFTER a scammer had already charged your card for a dubious service. They would (probably?) have to have a merchant account with a payment processor for that.