| Slipping and drifting: using older users to uncover pen-based target acquisition difficulties Recent academic inistitutions visiting this post, which is a subset of the total traffic |  |
| Data is not available yet. |
| Slipping and drifting: using older users to uncover pen-based target acquisition difficulties Recent academic inistitutions visiting this post, which is a subset of the total traffic | |
| Data is not available yet. |