I said be careful your cellphone is really a boarding pass

You could look up.

In today's USA Today Roger Yu writes, "Air France has launched electronic boarding passes on mobile phones for passengers on the Paris Charles de Gaulle-Amsterdam Schiphol route. Passengers who check in via its mobile Internet site — mobile.airfrance.com — can elect to receive their boarding-pass barcode as a text message or e-mail on their smartphones. Passengers then display their boarding pass to agents to check in baggage, proceed through security checkpoints and board the flight."