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FT-08.md
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| 1 | # FT-08: Density |
| 2 | |
| 3 | <!-- Generated from field-tests/suite.json by tools/field_tests.py. Edit the JSON, not this file. --> |
| 4 | |
| 5 | **Category:** Capacity · **Time:** about 10 minutes · **Run it and see results:** [https://openckey.org/tests/test?id=FT-08](https://openckey.org/tests/test?id=FT-08) |
| 6 | |
| 7 | ## What it checks |
| 8 | |
| 9 | At a fixed 2-inch print size, denser versions need a closer, steadier camera; version 10 still reads. |
| 10 | |
| 11 | ## Why |
| 12 | |
| 13 | More data means smaller marks at the same size. This shows where, for an ordinary phone, a code should be printed larger to carry more. |
| 14 | |
| 15 | ## Test codes |
| 16 | |
| 17 | Print or open the sheet at [https://openckey.org/tests/sheet?id=FT-08](https://openckey.org/tests/sheet?id=FT-08). It is drawn by the CKey web SDK from the values below. |
| 18 | |
| 19 | | Code | Size | Version | Level | Layout | Style | Holds | |
| 20 | |---|---|---|---|---|---|---| |
| 21 | | A | 2.0 in | 1 | L | standard | plain | `https://openckey.org/t/FT08-A` | |
| 22 | | B | 2.0 in | 5 | M | standard | plain | `https://openckey.org/t/FT08-B` | |
| 23 | | C | 2.0 in | 10 | M | standard | plain | `https://openckey.org/t/FT08-C` | |
| 24 | | D | 2.0 in | 15 | M | standard | plain | `https://openckey.org/t/FT08-D` | |
| 25 | | E | 2.0 in | 20 | M | standard | plain | `https://openckey.org/t/FT08-E` | |
| 26 | |
| 27 | ## Set up |
| 28 | |
| 29 | 1. Print the test sheet at 100% scale; each code is 2.0 inches wide. |
| 30 | 2. Use ordinary indoor light. |
| 31 | |
| 32 | ## Steps |
| 33 | |
| 34 | 1. Try each code, A (version 1) to E (version 20), from about 20 cm, moving closer if needed. |
| 35 | 2. Allow up to 8 seconds each. |
| 36 | 3. Record whether it read and the closest distance you needed. |
| 37 | |
| 38 | ## What to record |
| 39 | |
| 40 | - **Read within 8 seconds**, boolean, required. For each of: v1, v5, v10, v15, v20. |
| 41 | - **Distance needed** (cm), number, optional. For each of: v1, v5, v10, v15, v20. |
| 42 | |
| 43 | Every report also records the device, operating system, reader and its version, and the printer or screen. |
| 44 | |
| 45 | ## How to grade it |
| 46 | |
| 47 | - **Pass:** Versions 1, 5 and 10 read. |
| 48 | - **Partial:** Versions 1 and 5 read but not 10. |
| 49 | - **Fail:** Version 5 did not read. |
| 50 | |
| 51 | ## Report a result |
| 52 | |
| 53 | - On openckey.org: [https://openckey.org/tests/test?id=FT-08](https://openckey.org/tests/test?id=FT-08), with optional photos. |
| 54 | - On GitHub: [open a field-test report](https://github.com/clearkeysolutions/ckey/issues/new?template=field-test-report.yml&title=%5BFT-08%5D+) and choose FT-08. |
| 55 | |
| 56 | Both are published together at [https://openckey.org/tests](https://openckey.org/tests) and as JSON at [https://openckey.org/api/field/results](https://openckey.org/api/field/results). |