| Projects infobox | |
|---|---|
| image | |
| designers | |
| date | |
| vitamins | |
| materials | |
| transformations | |
| lifecycles | |
| tools | |
| parts | |
| techniques | |
| files | |
| suppliers | |
| git | |
When hiking, camping, or engaging in any other activity during which cell phone service may be unreliable, a system for communicating and locating each person can be helpful.