Lower barrier to entry is a significant advantage of Proof of Stake (PoS) over traditional Proof of Work (PoW) consensus algorithms. Here's why:

1. _No expensive hardware required_: In PoS, validators don't need to invest in expensive hardware, such as high-end graphics cards or ASICs.

2. _Lower financial requirements_: Validators only need to hold a certain amount of tokens to participate, which is a lower financial requirement compared to PoW.

3. _Easier to set up_: Setting up a PoS validator node is relatively easy and straightforward, compared to setting up a PoW mining rig.

4. _Increased decentralization_: With a lower barrier to entry, more people can participate in the validation process, leading to a more decentralized network.

5. _Greater accessibility_: PoS allows people with limited resources to participate in the validation process, making it more accessible to a wider range of people.

In contrast, PoW requires significant investment in hardware and energy, making it less accessible to many people. This leads to:

1. _Centralization_: PoW networks can become centralized, as only a few large mining pools have the resources to participate.

2. _Higher financial requirements_: PoW requires significant investment in hardware and energy, making it less accessible to people with limited resources.

3. _Complex setup_: Setting up a PoW mining rig can be complex and time-consuming.

By having a lower barrier to entry, PoS enables more people to participate in the validation process, leading to a more decentralized and accessible network.