No it doesn't signify intent. The signature on the slip should match the signature on the back of the card. This is how the retailer knows the purchaser is the

No it doesn't signify intent. The signature on the slip should match the signature on the back of the card. This is how the retailer knows the purchaser is the authorised user of the card. So unless the card as a poop emoji in it the card holder can deny the transaction based on non-matching signatures.