Add zoom feature for zxing app

Components

Barcode scanner is a scanner that enable scanning of barcodes on pack goods or products that shows all the bedded information on the screen, such as contact info, data matrix and so on. There is an option to share, bookmarks contacts on the application.

Proposal

Here I suggest to add the zoom feature, so users more easily in using this application.

Mockups / Examples

Before

After

Benefits

Usefulness or rather the benefits of this zoom feature is to facilitate users the scan code, for example if the position should be in the scan appears too far from the device, then the user can easily to close it, that is enough with this zoom feature.