Significant percentages feel that there is no suitable data available, or if there is they don't know about it. The lack of time to search for resources is a contributory factor to this. For those that have attempted to re-use digital data, some faced difficulties in converting it into a usable form, or were unsuccessful in their attempts. There is little concern over copyright. Not having a connection to the Internet is a significant barrier.
Many archaeologists feel that there is a lack of suitable data available in digital format.
This is coupled with a limited need for digital data, which may reflect how individual organisations work, but must also be tied in to the feeling that there is little relevant digital data in archives or on the Internet. Increasing awareness of digital resources is therefore an important area for archives and national bodies. Security and copyright are not prominent concerns for organisations. Time is too short to explore and sort out through all the junk to find the odd useful tool of information. In my own speciality it is the accepted thing that scientific data should be available for inspection by others - if the data are robust enough to support the hypothesis argued then they should withstand random inspection.