A device comprising: at least one computer readable storage medium bearing instructions executable by a processor; at least one processor configured for accessing the computer readable storage medium to execute the instructions to configure the processor for: causing the device to image space in front of the device; executing image recognition on objects in the space; based at least in part on the image recognition, determining whether at least one object is a candidate companion screen device, CCSD, wherein only companion screen devices having a particular orientation are determined to be CCSDs; responsive at least in part to determining that at least one object is a CCSD, causing ancillary content related to primary content presentable on the device to be provided to the CCSD for presentation of the ancillary content thereon, and responsive to determining that at least one object is a CCSD, determining whether the CCSD is in a predetermined configuration, and only if the CCSD is in the predetermined configuration, causing ancillary content related to primary content presentable on the device to be provided to the CCSD for presentation of the ancillary content thereon, and/or causing a message regarding accessing ancillary content to be provided to the CCSD for presentation of the message thereon. at least one computer readable storage medium bearing instructions executable by a processor; at least one processor configured for accessing the computer readable storage medium to execute the instructions to configure the processor for: causing the device to image space in front of the device; executing image recognition on objects in the space; based at least in part on the image recognition, determining whether at least one object is a candidate companion screen device, CCSD, wherein only companion screen devices having a particular orientation are determined to be CCSDs; responsive at least in part to determining that at least one object is a CCSD, causing ancillary content related to primary content presentable on the device to be provided to the CCSD for presentation of the ancillary content thereon, and responsive to determining that at least one object is a CCSD, determining whether the CCSD is in a predetermined configuration, and only if the CCSD is in the predetermined configuration, causing ancillary content related to primary content presentable on the device to be provided to the CCSD for presentation of the ancillary content thereon, and/or causing a message regarding accessing ancillary content to be provided to the CCSD for presentation of the message thereon. causing the device to image space in front of the device; executing image recognition on objects in the space; based at least in part on the image recognition, determining whether at least one object is a candidate companion screen device, CCSD, wherein only companion screen devices having a particular orientation are determined to be CCSDs; responsive at least in part to determining that at least one object is a CCSD, causing ancillary content related to primary content presentable on the device to be provided to the CCSD for presentation of the ancillary content thereon, and responsive to determining that at least one object is a CCSD, determining whether the CCSD is in a predetermined configuration, and only if the CCSD is in the predetermined configuration, causing ancillary content related to primary content presentable on the device to be provided to the CCSD for presentation of the ancillary content thereon, and/or causing a message regarding accessing ancillary content to be provided to the CCSD for presentation of the message thereon.