What does it mean for signers to be co-located during a signing session?

When signers are described as co-located during a signing session, it means that they are physically present in the same location and using the same device to facilitate the signing process. This arrangement can enhance the experience by allowing for direct interaction and immediate discussion, which can help clarify any questions or issues that arise during the signing.

Being in the same location can foster a collaborative atmosphere, as signers can quickly communicate and make decisions together without the delays that might arise from remote communication. This can also lead to a more efficient process, as all parties can see the signing interface simultaneously and can address any concerns as they occur.

In contrast, the other options imply different working environments which don't capture the essence of co-location: using separate devices indicates a level of separation; being in different locations but connected online means the signers are not physically together; and working independently suggests that there is an absence of immediate interaction. Therefore, the definition of co-located signers aligns with the scenario where they are together in the same space, sharing the same device.