
An OTP SMS service in Kolkata consists of a numeric code that is usable only once. Any business uses it during a transaction for authenticating the users.
OTP SMS service lasts not more than 5 minutes and cannot be used twice. There are 3 fundamental pillars that every business must consider for a promising future. They are quality of the product or service, premium quality customer service, and credibility. However, the fourth pillar consists of digital security which is the most significant pillar.
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