One makes a small, high-definition screen you can wear on a necklace or hat to express yourself through images, messages or GIFs.
Another uses military-grade encryption to allow law enforcement officers to communicate securely over off-the-shelf smart phones and devices.
A third created an “interview simulation engine” that employs predictive analytics to screen job applicants.
The fourth has software for retailers to track inventory, prevent stores from running out of stock and facilitate filling online orders.
