==== Locked objects ====
In some cases it might be useful to lock objects until the user varifies to be near to these objects. This can be done with the [[SYSCLS_UNLOCK_BY_SCAN]] ({{Version/AndroidSince|2.5.2}}) and [[SYSCLS_UNLOCK_GROUP_BY_SCAN]] ({{Version/AndroidSince|2.5.3}}) classifications. Instances of MetaClasses implementing this classification can only be edited after the object gets unlocked. The unlocking can currently happen by scanning any type of code (QR-Code, Barcode, ID-Marker, RFID, OCR) which is related to the according object. After a certain period of time (default 15min) the object gets locked again. In the case of Unlocking a group of objects, alternatively also more than one object can be unlocked at once by sharing a common unlock code.
Take care that objects classified by [[SYSCLS_UNLOCK_BY_SCAN]] also need the corresponding properties (e.g. QR-Code property) such that the user is allowed to unlock these objects. In the case of unlocking a group of objects, only one of the objects needs to be scannable in order to onlock all of them. If an object is locked, it is not possible to edit its properties. Furthermore, context actions like redlining or editing of documents, geo teach-in and deletion of the object on the server is not possible. Basically the locking is the same for all types of objects, except for work packages – unlocking them also means unlocking all underlying items (Tasks, Commissioning checks) as well.