Leases (Details Narrative)	3 Months Ended		6 Months Ended
	Apr. 30, 2021 USD ($) ft²	Apr. 30, 2020 USD ($)	Apr. 30, 2021 USD ($) ft²	Apr. 30, 2020 USD ($)
Rent expenses	$ 16,000	$ 16,000	$ 32,000	$ 32,000
Almaden Expressway, San Jose [Member]
Area of land | ft²	2,000		2,000
Operating lease, expiration date			Sep. 30, 2021
Rent expenses			$ 5,000
Rent percentage			3.00%
Operating lease remaining term	5 months		5 months