Commit 59c726e7 authored by ROCA Vincent's avatar ROCA Vincent
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update section user tested COVID+ has used the hand-written attendance register

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......@@ -640,9 +640,15 @@ However, since the `{LTId_cluster, h1_cluster}` information is public, a curious
The use of the Cléa digital system is based on a voluntary decision of the user, the alternative consisting for this user in leaving her name in the hand-written attendance register.
Consequently, a link between the two systems should be established.
However, there can be specific use-cases where the hand-written attendance register may not exist, for instance in case of digital ticketing.
In that case, the `locContactMsg` may be ignored (i.e., `locContacMsgPresent` can be set to 0).
Similarly, the Health Authority may decide not to link the two systems together, in which case the `locContacMsgPresent` flag can be set to 0.
The following sections explain how this can be done, depending on whether a user tested COVID+ has used the Cléa system or the hand-written attendance register.
It should also be noted that there are use-cases where the hand-written attendance register may not exist, for instance in case of digital ticketing.
In that case, the `locContactMsg` should be ignored, by setting the `locContacMsgPresent` flag to 0.
Similarly, the Health Authority may decide not to link the two systems together, in which case the `locContacMsgPresent` flag should be set to 0.
It should also be noted that the link between the two systems is not perfect.
If the cluster qualification threshold is strictly superior to `1`, it can happen that a given location should be qualified as cluster because the total number of COVID+ persons who were there at the same time is sufficient, but no alert is raised because some of them used the Cléa application, and the others the attendance register.
#### A user tested COVID+ has used the Cléa system
......@@ -652,7 +658,7 @@ Since the re-identification of the location is the responsibility of the authori
The `locContactMsg` message is structured as follows (high-level view):
```
locContactMsg = [ locationPhone | locationRegion | locationPIN | t_periodStart ]
locContactMsg = [ locationPhone | padding | locationRegion | locationPIN | t_periodStart ]
```
The following binary format must be used:
......@@ -676,7 +682,7 @@ The phone number must be encoded using the [E.164](https://www.itu.int/rec/T-REC
For instance, in case of France, `+33 1 02 03 04 05` will be stored as (binary) `0011 0011 0001 0000 0010 0000 0011 0000 0100 0000 0101 1111 1111 1111 1111`.
Unused nibbles must contain the `1111` / `0xF` value.
- `padding`(4 bits):
- `padding`(4 bits) (`pad` in figure):
this field is unused in the current specification and must be set to zero.
- `locationRegion` (1 byte):
......@@ -701,9 +707,13 @@ The details of how this is done is out of scope of the present document.
#### A user tested COVID+ has used the hand-written attendance register
```diff
- TODO: short description.
```
Here, the Manual Contact Tracing team determined that a certain location, at a certain time, should be qualified as cluster.
However, since the person(s) tested COVID+ used the hand-written attendance register of the location, there is no scanned QR code that could be used to trigger the cluster qualification at the backend server.
In order to make it possible, the Manual Contact Tracing team needs to ask the location manager to recover and upload the QR code of this period.
For instance, the team can physically visit the location, discuss with the manager and help her upload her own scanned QR code of that day, using a dedicated authorization token.
In case of a static QR code, obtaining the required QR code is not an issue.
In case of a dynamic QR code, this scenario requires that the location manager scans her location QR code everyday, as any employee is supposed to do.
Although there is a risk that she omitted to do so on that day (thereby preventing a notification through the Cléa applications), the probability this happened is reasonable.
### 3.10- Management of the location employees
......
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