France is pressing Brussels to regulate the mechanics that keep people using social-media platforms, pushing Europe’s child-safety debate beyond age checks and into recommendation systems, notifications, interface design, and other product choices that determine how services compete for attention.

President Emmanuel Macron has urged the European Commission to support stronger restrictions on social-media use by children under 15 while also examining features designed to prolong engagement. The intervention extends an established French position that has so far concentrated heavily on age limits and verification.

The broader approach would bring recommendation algorithms, notifications, rewards, default settings, and interface choices closer to the centre of regulation. Those systems are embedded in ordinary product design rather than sold as separate services, which makes the policy task considerably harder than imposing a simple minimum age.

France has already tried to legislate nationally on children’s access to social media, although an earlier measure ran into constitutional difficulties. Paris and Berlin have also backed work towards a more harmonised European approach to digital age thresholds and privacy-preserving verification, while the Commission has been developing related child-safety measures under the Digital Services Act.

Regulation moves inside the interface

Age restrictions create a relatively clear legal boundary even if enforcement is difficult. A platform must establish whether a user has crossed a threshold, and regulators can then assess whether its verification process is adequate, proportionate, and sufficiently protective of personal information.

Addictive-design rules require a more contested judgement because the same features that increase time spent on a service can also have legitimate functions. Recommendation systems help people discover content, notifications alert them to activity, and interface choices can make services easier to navigate, yet those features can also be optimised to maximise repeated engagement.

Regulators consequently have to decide when effective design becomes an unacceptable risk rather than simply a successful product. Rules drafted too broadly could leave companies uncertain about ordinary interface development, while narrow bans could encourage platforms to recreate the same behavioural effect through a slightly different mechanism.

The Digital Services Act already gives Brussels tools to address systemic risks on the largest platforms, including risks affecting minors. The Commission has also pushed providers towards safety-by-design approaches, although more prescriptive rules would represent a further step by identifying particular product mechanics as problems in their own right.

Age verification becomes shared infrastructure

France’s wider agenda shows why access restrictions and interface regulation are difficult to separate. An under-15 rule requires platforms to determine age reliably, yet governments also want to avoid a system in which users routinely hand passports or identity documents to social-media companies simply to prove they are old enough to open an account.

The Commission has therefore been developing privacy-preserving age-verification approaches that reveal the required age status without disclosing unnecessary personal information. If several countries adopt similar restrictions, that technical layer could become shared European infrastructure used across multiple digital services rather than something each platform builds independently.

That would extend beyond social media because age assurance also affects gambling, adult content, online retail, gaming, and other regulated services. A common technical approach could reduce duplication, although it would still need clear rules governing security, accessibility, interoperability, and the organisations authorised to perform checks.

France and Germany have already pushed for greater European coordination, reducing the attraction of separate national systems that could leave platforms integrating several verification methods and children facing different rules depending on where they live.

Engagement economics enter the argument

Regulating recommendation systems and notifications would reach more directly into platform economics because engagement affects advertising inventory, creator distribution, recommendation performance, and the volume of behavioural information generated through use. Changes that reduce time spent on a service could therefore influence both product metrics and revenue.

Platforms are likely to argue that the effects of individual features depend on context, age, and the way people use the service, while regulators will need sufficiently robust evidence to justify rules that alter product architecture across an entire market. The challenge is compounded by the speed with which dominant interface conventions can change.

National pressure is building faster than a common European framework, creating a risk that different countries move ahead with incompatible age limits or design rules. Brussels retains important powers over the digital single market, however, and a coordinated regime would reduce the likelihood of platforms facing several overlapping versions of the same obligation.

The dispute is therefore shifting away from a narrow argument over whether children should have accounts and towards the commercial design of the services they encounter once access is granted. If Brussels follows France further into recommendation systems, notifications, rewards, and default settings, Europe will be regulating not only participation in social media but part of the engagement model on which the platforms themselves are built.