I have recently opted to go all 'cutting edge' and use the self service checkouts at my local supermarket, but the 'voice' doesn't seem to like me at all - and it's giving me a complex!
For a start she's always shouting at me (I understand that she speaks loudly so that that hard of hearing customers can use her), then there's the 'please place the item in the bag', when I already have, so I remove the item and she doesn't like that and then she tells me to 'please wait for assistance', for no apparent reason, leaving all those queing behind me to think that I am incompetent at till operations, while I stand there looking lost and awkward until a real checkout assistant arrives.
Woe betide anybody who so much as accidently brushes up against the side of the till / breathes at the wrong time. This sets her off again!
Finally, a milli-second after I have paid, she shouts 'please take your items' i.e. 'We've got your money, so now f**k off before you have time to put your recipt in your purse!'
I have noticed, however, that she has quite a husky yet strict tone to her voice, which I'm sure she uses to lure the boys in.