Bit Whisperer: Enabling Ad-hoc, Short-range, Walk-Up-and-Share Data Transmissions via Surface-restricted Acoustics. - Youngwook Do; Siddhant Singh; Zhouyu Li; Steven R. Craig; Phoebe J. Welch; Chengzhi Shi; Thad Starner; Gregory D. Abowd; Sauvik Das (UIST, 2021)