Not really. That's internal implementation details that might not actually correctly reflect state.
I realized that it can interfere with the new trip logic, but not just the getters; it would already help a lot to obtain with greater precision how long a device has been idle.
We have some fields in the tc_device table that are being ignored in DeviceResource.java. I think they would be helpful in gathering information such as the last time the vehicle moved. Is there any intention to remove the @JsonIgnore tags in future versions?