first question to ask the taxi driver before he moves is will he be able to issue you a printed reciept at the end of the journey , if the answer is no, get out! to late at the end of the journey to be listening to(ahh sorry the printer's not workin) your entitled to a receipt its the law! €250 on the spot fine for a taxi driver found with a printer not working, if you feel akward about asking just say its for your job and they only accept printed receipts,