The cue word for the story was CARD:
His business card was unique. Brad had special cards made that he would hand out to prospective clients. The cards were made for him by Altadox in Shenzhen, China. Containing circuits, the card hummed, lit up, then vibrated when exposed to light and warmed by contact with the hand. Brad would pull a card out at a meeting, and hand it to visitors, causing the meeting to stop while everyone passed the card around, examining it. The small amount of radioactive material used to power the devices leaked, and the cards had to be recalled, but it was too late.