If you are wondering how to use OTP for online voting, the first thing you should know is that an OTP (One-Time Password) is a temporary code that can only be used once to access a specific process, in this case, a digital vote.
An OTP works in a simple way. The system generates a unique code, sends it to the voter by SMS, email, or app notification, and the user must enter it in the platform to validate their access. That code expires in seconds or minutes, so if someone tries to reuse or intercept it, it simply will not work.
How to use OTP for online voting with Eligo without complicating the voter, or your technical team
With Eligo, how to use OTP for online voting is simplified to the maximum. Our system turns the use of a one-time code for voting into an automatic, intuitive action, even for people who are not familiar with technology.
Eligo Voting generates, sends, and validates OTPs in a matter of seconds. No waiting. No redundant steps. Internally, Eligo relies on a reinforced infrastructure with advanced encryption, distributed servers, and continuous audits. This ensures that the OTP is only one element within a broader security chain, including voter-roll verification, access control, vote anonymisation, separation between identity and choice, and fully verifiable tallies. Many systems claim to send codes by SMS, but very few can prove that their entire process is coherent, auditable, and compliant with GDPR. Eligo can.
One interesting case was Frontex, and how to use OTP for online voting in critical European security decisions that required guaranteeing:
- Verified access, free from impersonation attempts.
- Secret and open ballots depending on the agenda point.
- Autonomous session management by their own teams.
- A smooth process using tablets provided onsite.
- Reinforced security without slowing participation.
Frontex is the perfect example of how to use OTP for online voting in a highly demanding environment, and the results were total participation and full security. The impact was immediate and measurable, with 100 percent turnout in their votes, zero technical incidents, maximum fluency in access thanks to OTP, and guaranteed secret ballots, even in single-candidate elections.
Who should use OTP in their electoral processes
When you look at how associations, unions, or universities vote today, it becomes clear why the question how to use OTP for online voting is increasingly present in the modernisation strategies of many organisations.
Here is a look at the types of entities that benefit most from using OTP:
- Professional associations that often manage sensitive votes: boards of directors, budgets, statutes, and processes where voter identity is essential.
- Unions and companies: Union elections or internal company votes can influence working conditions, collective agreements, or key appointments. Here, OTP acts as a strong barrier between the right to vote and any attempt at manipulation, a benefit also emphasised by the Cybersecurity and Infrastructure Security Agency (CISA) in its MFA recommendations.
- Cooperatives: They stand out for their democratic and decentralised structure. However, that same setup can create identification issues when members are spread across different regions or use personal devices.
- Small and medium-size municipalities with a diverse population: older residents, neighbours with low digital literacy, participants without corporate email…
- Religious orders: Where discretion, verified identity, and the ability to vote from anywhere must prevail.
- Schools and universities: With constantly changing voter rolls, young voters who use mobile phones more than email, and short voting windows, OTP fits in naturally.
If your organisation needs a reliable system to authenticate voters without complicating the process, request a demo and discover how Eligo Voting works.
5 FAQs about how to use OTP for online voting
How to use OTP for online voting if a voter does not have immediate access to their mobile phone?
In some organisations it is common for a voter to lose access to their phone due to loss, malfunction, or being in a location with no signal. In these cases, how to use OTP for online voting means offering secure alternative channels, such as sending the code by email or through internal notifications.
Can I use OTP for online voting if several people share the same computer or device?
This scenario is more common than it seems: shared offices, community centres, or residences where several voters use the same device. In these situations, how to use OTP for online voting solves the risk of confusion by ensuring each login is tied to a unique, non-repeatable code. Even if they share a device, no one can enter with someone else’s OTP, and the system automatically closes the session once the vote is completed.
How to use OTP for online voting in processes that require both secret and open ballots within the same session?
Some assemblies must alternate between secret elections and open votes, which raises the question of how to use OTP for online voting without compromising confidentiality. OTP is used only to authenticate access, not to link identity with the vote. Once inside, the system fully separates authentication from ballot casting, allowing organisers to switch between voting models without losing process integrity.
Can OTP be used for online voting when the process includes several agenda items at different times?
In long voting sessions, such as academic councils or municipal assemblies, different points open and close throughout the day. In these cases, using OTP for online voting ensures that each voter authenticates only when appropriate. The OTP expires after each access, preventing a user from voting on items they should not or during times when the session is closed.
How to use OTP for online voting in organisations with rapidly changing or last-minute updated voter rolls?
In cooperatives, educational centres, or associations with many new members and departures, the voter list changes constantly. Using OTP for online voting simplifies control because the system only sends codes to those who are correctly registered. If the voter roll is updated minutes before the vote, OTP ensures no one can access with outdated or incorrect credentials, keeping the process orderly and avoiding unfair exclusions.