| Text-Tracking Wearable Camera System for the Blind Recent countries visiting this post |  |
 | 5 | United States |
 | 3 | Russian Federation |
 | 1 | Sweden |
 | 1 | Japan |
| Text-Tracking Wearable Camera System for the Blind Recent countries visiting this post | |
| 5 | United States |
| 3 | Russian Federation |
| 1 | Sweden |
| 1 | Japan |