Methods for creating a protective seal suitable for protecting polymer-based electronic devices, including light emitting diodes and polymer emissive displays, are disclosed together with the protected devices. The joint structure comprises a first structural member having a channel with a first wall, a second wall generally opposite the first wall and a third wall connecting the first and second walls. The cooling tube may include a first conduit, a second conduit disposed inside the first conduit having substantially no contact with the first conduit and containing a working fluid, and an isolation region disposed between the first conduit and the second conduit. The system includes a device for monitoring user activity and determining an appropriate device configuration from user activity sequences with that device, and a configurer that implements the appropriate configuration determined by the algorithm.