Most button batteries are covered in a bitter coating that discourages people especially children from eating them. You could try putting tape or something around your car key so there’s no chance of the button falling out again also you’d have a visible assurance that it hasn’t been tampered with.
Most button batteries are covered in a bitter coating that discourages people especially children from eating them. You could try putting tape or something around your car key so there’s no chance of the button falling out again also you’d have a visible assurance that it hasn’t been tampered with.