Aura Systems Inc, the El Segundo, California company whose virtual reality vest makes sure that when you are zapped in a video game, you know you have been zapped – it gives you a thump in the guts or whereever says it has signed up for a $12m revolving credit line, to be secured by the company’s receivables and inventory, but did not say which bank granted it the credit or to what purpose it would be put apart from a commitment to growth.