2. Basis of Presentation and Significant Accounting Policies: PASSUR Network (Details) - USD ($)			3 Months Ended		6 Months Ended
	Apr. 30, 2019	Oct. 31, 2018	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Details
PASSUR Network Costs, Capitalized			$ 61,000	$ 58,000	$ 61,000	$ 125,000
PASSUR Network Parts Used in Repairs			13,000	7,000	22,000	11,000
Depreciation of PASSUR Network costs			210,000	176,000	416,000	352,000
Purchased Parts for PASSUR Network				$ 20,000		$ 72,000
PASSUR NETWORK, Net (Rounded)	$ 4,426,000	$ 4,801,000
Part and Finished Goods for the PASSUR Network	$ 1,857,000	$ 1,892,000	$ 1,857,000		$ 1,857,000