How to Use "unreadable" with Example Sentences

1. His little arms were crossed , but his expression was unreadable .
2. Data stored electronically decays . Many floppy disks from the early digital age are already unreadable .
3. The new software leaves nothing to hand over , so it looks as if it will be able to make old messages completely unreadable .
4. However , our head is left handed and his writing is unreadable even by him !
5. He had an unreadable expression on his face but I could still see the sparkle in his eyes .