During our final presentation of the invention, we received number of constructive comments from the teachers, which we have included here as suggestions for improvement:

1) Adhesion of the rope in the bracelet:

The teachers suggested that we could have used a material with better adhesion to hold the rope more securely inside the bracelet. This would increase the safety and reliability of our device.

2) Use of the wrist:

Another point raised concerned the difficulty users have in turning their wrist to catch and use the cord correctly. The teachers pointed out that this is not necessarily a design problem, but rather a learning curve for the user: they have to get used to using their wrist appropriately in order to handle the system effectively.

3) Changes in wrist size:

Finally, an important point concerns the growth of the user. If a person grows, the size of their wrist will change. We would then either have to make a new wristband, or rethink our prototype by using a more elastic material, capable of adapting to morphological changes.

These comments will enable us to improve our invention, taking into account the practical, ergonomic and evolutionary aspects of the product.