There is no such thing as a court approved forensic device or a standard forensic tool applicable to all the different legal systems across the globe. In general terms a device has to demonstrate that it is fit for purpose in each geographical territory where it is used.
XRY is used in over 100 countries worldwide and has been used by law enforcement agencies on countless occasions as evidence in criminal proceedings since 2003. Whilst the mobile device is always ‘primary’ evidence as the original source of the data; the XRY report is often preferable because it makes it so much easier to display relevant evidence to the court.
In many nation states the government has independent legal bodies which can be used to test devices and check their validity and accuracy. NIST in the USA is a good example of such a body who have tested XRY and provided objective independent assessments to help the courts evaluate the product.
Best evidence rules in many nations also guide that a person submitting digital forensic evidence must be competent to do so, and that usually means they should have been properly trained, so that they can give evidence explaining the relevance and the implications of their actions.
Good practice also indicates that an audit trail should be created to record all processes applied to the electronic device (which XRY automatically creates for you). Such that an independent third party will be able to examine those processes and achieve the same result.