# v1.2 - Alpha Centauri
This page gives an overview over all changes since the 1.1 release.
# AppHub and AppDesigner
- Many bugs have been fixed in the AppDesigner and AppHub
- A new widget has been added: Code Scanner
- It allows to scan QR codes and barcodes and to write their value to the IoTHub.
- Property Value Text:
- When using floating point properties, users can now specify how many decimal places to display
- Writing the same property multiple times with the same button is now forbidden
- Previously, users could write the same property with multiple effects of the same button although this does not make sense.