Handling defective identification media
Identification media can suffer from defects:
- Software defect
- Hardware defect
As a basic rule, all actions can be performed using the wizard section on the right-hand side:

If the identification medium has been lost or stolen, you must block it (see Blocking and replacing lost/stolen identification media permanently).
The following overview will help you to decide on the correct course of action. It is helpful if you know how identification media and TID are linked (see Identification media, locking devices and the locking plan).
Transponders/replacement transponders are required again immediately:
Suitable for:
Re-synchronise (repair) | Resetting and replacing | Delete and replace |
---|---|---|
Identification media with undefined software status. |
| Identification media with permanent damage (e.g. burnt) for which a replacement is required. |
Example situation:
Re-synchronise (repair) | Resetting and replacing | Delete and replace |
---|---|---|
Employee’s transponder has fallen into the pool. Result: transponder functional but at risk of failure due to exposure to water. | Employee’s transponder has fallen into a camp fire. Result: transponder melted and permanently damaged. |
Procedure:
Re-synchronise (repair) | Resetting and replacing | Delete and replace |
---|---|---|
The identification medium functions as before after it is repaired. |
After the reset, the TID is no longer contained in the identification medium. The identification medium can therefore no longer be used. However, it can be re-synchronised. A new TID is written onto the identification medium. |
It is obviously not possible to reset a permanently damaged identification medium because it is no longer accessible. This means the TID remains in the identification medium. In the case of a defective identification medium, this is irrelevant as the TID can no longer be transmitted anywhere. The TID is thus used for the replacement identification medium. It will pose a problem if the supposedly defective identification medium starts functioning again. In such a case, the same TID will be in circulation twice – once on the original identification medium and once on the replacement identification medium. Locking devices would treat both identification media identically on the basis of the same TID, although two different people may be in possession of the identification media. This poses a security risk. It is therefore important to ensure that the identification medium being replaced is actually defective and will remain so. |
Transponder/replacement transponder is not required:
Suitable for:
taking out of use and leaving in the database | taking out of use and deleting from the database |
---|---|
Permanently damaged identification media (e.g. burnt) for which no replacement is required (e.g. employee left company) | Permanently damaged identification media (e.g. burnt) for which no replacement is required (e.g. employee left company) |
Example situation:
taking out of use and leaving in the database | taking out of use and deleting from the database |
---|---|
The employee’s transponder fell into camp fire at the employees’ farewell party. Result: transponder melted and permanently damaged, employee no longer around. | The employee’s transponder fell into camp fire at the employees’ farewell party. Result: transponder melted and permanently damaged, employee no longer around. |
Procedure:
taking out of use and leaving in the database | taking out of use and deleting from the database |
---|---|
Take out of use and leave in database
The permanently damaged identification medium retains its TID but the TID is blocked in the database. As the identification medium is not deleted, the TID and the flag as defective remain in the database. New identification media cannot be created with this TID. This means that the same TID cannot brought into circulation twice. | taking out of use and deleting from the database Delete (= TID available in database again) As a basic rule, the same applies in this case as to deletion with a replacement. The permanently damaged identification medium retains its TID while the TID can be reused for newly created identification media. If the deleted identification medium then starts working again, the same TID will be in circulation twice in this case too. It is therefore important to ensure that the identification medium being replaced is actually defective and will remain so. |