17.	Concentrations of credit risk:

Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash and accounts receivable. The Company places its cash with high quality financial institutions and limits the amount of credit exposure with any

one

institution.

The Company currently maintains a substantial portion of its day-to-day operating cash balances at financial institutions. At

June 30, 2020,

the Company had total cash and cash equivalents balances of

$1,152,538

(

December 31, 2019 -

$1,005,624

) at financial institutions, where

$955,173

(

December 31, 2019 -

$661,741

) is in excess of federally insured limits.

The Company has concentrations of credit risk with respect to accounts receivable, the majority of its account's receivable are concentrated geographically in the United States amongst a small number of customers.

As of

June 30, 2020,

the Company had

three

customers, totaling

$477,535,

$135,308

and

$134,847

who accounted for greater than

10%

of the total accounts receivable. As of

December 31, 2019,

the Company had

one

customer, totaling

$1,430,646

who accounted for greater than

10%

of the total accounts receivable.

The Company controls credit risk through monitoring procedures and receiving prepayments of cash for services rendered. The Company performs credit evaluations of its customers but generally does

not

require collateral to secure accounts receivable.