2. Basis of Presentation and Significant Accounting Policies: PASSUR Network (Details) - USD ($)			3 Months Ended		9 Months Ended
	Jul. 31, 2019	Oct. 31, 2018	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
PASSUR Network Costs, Capitalized				$ 87,000	$ 61,000	$ 212,000
PASSUR Network Parts Used in Repairs			$ 8,000	100	30,000	11,000
Depreciation of PASSUR Network costs			226,000	213,000	642,000	565,000
Purchased Parts for PASSUR Network				48,000		120,000
PASSUR NETWORK, Net (Rounded)	$ 4,192,000	$ 4,801,000
Part and Finished Goods for the PASSUR Network	$ 1,849,000	$ 1,892,000	1,849,000		1,849,000
Provision for obsolete and slow moving PASSUR Network parts and supplies						270,000
Cost of revenues			$ 2,137,662	$ 3,908,281	$ 6,206,428	8,173,702
Passur Network 1
Cost of revenues						$ 510,000