3. Passur Network (Details) - USD ($)	6 Months Ended	12 Months Ended
	Apr. 30, 2020	Oct. 31, 2020	Oct. 31, 2019
Capitalized costs of PASSUR Network		$ 0	$ 61,000
Passur Network Depreciation		374,000	868,000
PASSUR NETWORK, Net		0	3,948,542
Cost of uninstalled PASSUR Systems		0	1,298,000
Cost of uninstalled SMLAT Systems		0	533,000
Impairment of assets		$ 9,874,281	$ 0
PASSUR Network Systems [Member]
Impairment of assets	$ 3,565,000
Impairment of lease asssets	$ 175,000