Google’s new “Nano Banana” tool is part of its Gemini AI suite and lets users upload pictures and transform them into stylised portraits, 3-D figurine looks or other creative edits. The service has gone viral in India and South-East Asia through trends such as the “AI saree” portrait challenge. Alongside its popularity, experts and regulators have started to question how safe it is for ordinary people to use.
Built-In Safety Features
According to Google, the app processes images on its own secure servers, does not automatically add them to training datasets without consent, and tags outputs with an invisible watermark called SynthID so that other systems can tell the picture came from AI. Basic moderation filters are also built in to block obviously harmful requests.
Main Risks Being Flagged
However, privacy groups and some police officials say those measures do not eliminate all problems:
- Deepfake Potential – The same tools that let you make artistic portraits can also be used to generate misleading or abusive images of real people.
- Watermark Gaps – The hidden SynthID mark can be cropped out or degraded if the image is altered further, limiting its value as proof of origin.
- Data Privacy – Uploading a personal photograph still means giving a copy to a large tech company. Even with policies in place, leaks or unauthorised reuse can happen. Fake “Nano Banana” look-alike apps that harvest data are already appearing on social media.
- Quality and Filter Issues – Users have posted examples of distorted faces or rejected harmless prompts, showing the system is still imperfect.
How to Use It More Safely
Experts recommend the following:
- Stick to the official app or website rather than downloading clones.
- Avoid uploading sensitive or private images such as ID cards or family pictures you wouldn’t want leaked.
- Check the terms of service and privacy settings to see if your content is used for training.
- Be cautious when sharing AI-generated portraits online; the watermark may not survive reposting.
Bottom Line
Compared with many free AI apps, Nano Banana incorporates more transparency and watermarking. But it is not fool-proof: privacy loss, misuse for deepfakes and imposter apps are real possibilities. How “safe” it is will depend largely on the user’s own precautions.
