Option 1
A total screen ban
Hard to enforce outside school, especially at home. Screens now bring together essential uses: working, staying informed, having fun and staying in touch.
S2ND, Lda · Publisher of Hi
Stay connected,
never exposed.
S2ND is a Portuguese technology company based in Oeiras. We design and publish Hi · Human intelligence, a messenger that protects young people's privacy without cutting them off from their social lives.
Human intelligence
Connected,
not exposed.
The challenge · a public health issue
The problem isn't the screen.
It's the business model.
France and Portugal, like other European countries, ban mobile phones in schools to protect young people's attention span and mental health. But what happens once they leave the school gates? Today, families and policymakers face a false choice.
Option 2
Doing nothing
This means exposing young people to algorithmic manipulation and malicious contacts, and losing control over their data and history, with no right to be forgotten.
The need to connect is fundamental. How can young people keep their social life online without giving up their privacy?
Our answer · Hi · Human intelligence
A messenger designed
to protect, not to capture.
Human connection
A paid model that puts real people first.
- Zero addictive algorithms
- Zero generative AI
- Zero ads
Sealed spaces
Each world stays strictly separate.
A compartmentalised architecture: interests, contacts and content never mix. Zero history, zero big data, zero data sharing with other apps.
Digital sustainability
Content with a limited lifespan.
Messages are automatically deleted after 48 hours, from every device and from our servers. Less data kept means less storage and less energy.
Our commitment
A strong social impact,
a light environmental footprint.
We want S2ND to be a company with a strong social impact and a low environmental impact. This guides our product choices, our business model and our partners.
Social impact
- Protecting young people's privacy and mental health.
- Raising awareness of digital rights among young people and families.
- Funding the app through subscriptions, never through data.
Low environmental impact
- Automatic deletion of content: no build-up of data.
- No generative AI or profiling, both computationally heavy.
- An app that is deliberately lean.
Partnership opportunities & deployment models
Let's build together
projects that protect.
We offer a clear, ethical collaboration framework tailored to each partner.
Pilot projects
Local authorities
- Your contribution
- A local digital privacy education programme, promoted through your official communication channels.
- What Hi delivers
- A pilot deployment giving young people in your area priority access to Hi, with access codes and sponsored invitations.
Workshops & educational projects
Schools, associations
- Your contribution
- Hosting the workshops and engaging young people and families.
- What Hi delivers
- Prevention workshops on privacy rights, digital footprint and mental health. Purely educational: no sales pitch, no pressure to download.
Awareness programmes
Companies with a CSR commitment, foundations
- Your contribution
- Funding for awareness programmes and educational kits for young people.
- What Hi delivers
- Awareness campaigns and recognition in our impact report and on our website. Never any advertising in the app.
Our partner charter. We decline funding from any organisation whose business relies on targeted advertising, data collection or resale, gambling or alcohol.
Local authorities · Schools · Partners · Investors · Press
Let's give young people a real choice.
Let's talk.
Phone
+351 932 257 085
The founding team
Two founders,
one shared conviction.
We are two French entrepreneurs who have lived in Portugal for five years. Our conviction was born from watching our children grow up: we could see the problems, but had no solution to offer them. That is why we created an alternative.
