Practical technologies are in place at McCarran as Las Vegas hosts CES 2012. Local limo drivers beckon arriving guests by displaying their welcome signs on tablet devices. Can you say, "Out with the old and in with the new?"

Practical technologies are in place at McCarran as Las Vegas hosts CES 2012. Local limo drivers beckon arriving guests by displaying their welcome signs on tablet devices. Can you say, "Out with the old and in with the new?"